User equipments, base stations and methods

ABSTRACT

A user equipment (UE) is described. Receiving circuitry is configured to receive an activation command for semi-persistent channel state information-reference signal (CSI-RS) and channel state information-interference measurement (CSI-IM) resource(s) configuration, the semi-persistent CSI-RS and CSI-IM resource(s) configuration being associated with a DL BWP. The receiving circuitry is configured to receive a deactivation command for the semi-persistent CSI-RS and CSI-IM resource(s) configuration. Processing circuitry is configured to consider that the semi-persistent CSI-RS and CSI-IM resource(s) configuration is suspended when the associated DL BWP is being deactivated.

RELATED APPLICATIONS

This application is related to and claims priority from U.S. ProvisionalPatent Application No. 62/616,290, entitled “USER EQUIPMENTS, BASESTATIONS AND METHODS,” filed on Jan. 11, 2018, which is herebyincorporated by reference herein, in its entirety.

TECHNICAL FIELD

The present disclosure relates generally to communication systems. Morespecifically, the present disclosure relates to new signaling,procedures, user equipment (UE) and base stations for user equipments,base stations and methods.

BACKGROUND

Wireless communication devices have become smaller and more powerful inorder to meet consumer needs and to improve portability and convenience.Consumers have become dependent upon wireless communication devices andhave come to expect reliable service, expanded areas of coverage andincreased functionality. A wireless communication system may providecommunication for a number of wireless communication devices, each ofwhich may be serviced by a base station. A base station may be a devicethat communicates with wireless communication devices.

As wireless communication devices have advanced, improvements incommunication capacity, speed, flexibility and/or efficiency have beensought. However, improving communication capacity, speed, flexibilityand/or efficiency may present certain problems.

For example, wireless communication devices may communicate with one ormore devices using a communication structure. However, the communicationstructure used may only offer limited flexibility and/or efficiency. Asillustrated by this discussion, systems and methods that improvecommunication flexibility and/or efficiency may be beneficial.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram illustrating one implementation of one or morebase stations (gNBs) and one or more user equipments (UEs) in whichsystems and methods for downlink and/or uplink (re)transmissions may beimplemented;

FIG. 2 shows examples of multiple numerologies;

FIG. 3 is a diagram illustrating one example of a resource grid andresource block for the downlink and/or the uplink;

FIG. 4 shows examples of resource regions;

FIG. 5 illustrates an example of the downlink and/or uplinktransmissions;

FIG. 6 illustrates another example of the downlink and/or uplinktransmissions;

FIG. 7 illustrates various components that may be utilized in a UE;

FIG. 8 illustrates various components that may be utilized in a gNB;

FIG. 9 is a block diagram illustrating one implementation of a UE inwhich systems and methods for downlink and/or uplink (re)transmissionsmay be implemented;

FIG. 10 is a block diagram illustrating one implementation of a gNB inwhich systems and methods for downlink and/or uplink (re)transmissionsmay be implemented;

FIG. 11 is a block diagram illustrating one implementation of a gNB;

FIG. 12 is a block diagram illustrating one implementation of a UE;

FIG. 13 illustrates an example of setting(s) for CSI reporting;

FIG. 14 is a flow diagram illustrating a communication method of a userequipment; and

FIG. 15 is a flow diagram illustrating a communication method of a basestation apparatus.

DETAILED DESCRIPTION

A user equipment (UE) that communicates with a base station apparatus onone or more downlink bandwidth parts (DL BWPs) in a serving cell isdescribed. Receiving circuitry is configured to receive an activationcommand for semi-persistent channel state information-reference signal(CSI-RS) and channel state information-interference measurement (CSI-IM)resource(s) configuration, the semi-persistent CSI-RS and CSI-IMresource(s) configuration being associated with a DL BWP in the servingcell. Receiving circuitry is also configured to receive a deactivationcommand for the semi-persistent CSI-RS and CSI-IM resource(s)configuration. Processing circuitry is configured to consider that thesemi-persistent CSI-RS and CSI-IM resource(s) configuration is suspendedwhen the associated DL BWP is being deactivated.

The UE may further include receiving circuitry is configured to receivea radio resource control message comprising a parameter used foridentifying the associated DL BWP. The UE may further includetransmitting circuitry configured to perform CSI reporting based on thesemi-persistent CSI-RS and CSI-IM resource(s) configuration, whereinCSI-RS resource(s) is for channel measurement, and CSI-IM resource(s) isfor interference measurement.

A base station apparatus that communicates with a user equipment on oneor more downlink bandwidth parts (DL BWPs) in a serving cell is alsodescribed. The base station apparatus includes transmitting circuitryconfigured to transmit an activation command for semi-persistent channelstate information-reference signal (CSI-RS) and channel stateinformation-interference measurement (CSI-IM) resource(s) configuration,the semi-persistent CSI-RS and CSI-IM resource(s) configuration beingassociated with a DL BWP in the serving cell. The base station apparatusalso includes transmitting circuitry configured to transmit adeactivation command for the semi-persistent CSI-RS and CSI-IMresource(s) configuration. The base station apparatus also includesprocessing circuitry configured to consider that the semi-persistentCSI-RS and CSI-IM resource(s) configuration is suspended when theassociated DL BWP is being deactivated.

The transmitting circuitry may also be configured to transmit a radioresource control message comprising a parameter used for identifying theassociated DL BWP.

The base station apparatus may further include receiving circuitryconfigured to receive CSI reporting based on the semi-persistent CSI-RSand CSI-IM resource(s) configuration, wherein CSI-RS resource(s) is forchannel measurement, and CSI-IM resource(s) is for interferencemeasurement.

A communication method of a user equipment that communicates with a basestation apparatus on one or more downlink bandwidth parts (DL BWPs) in aserving cell is also described. The communication method includesreceiving an activation command for semi-persistent channel stateinformation-reference signal (CSI-RS) and channel stateinformation-interference measurement (CSI-IM) resource(s) configuration,the semi-persistent CSI-RS and CSI-IM resource(s) configuration beingassociated with a DL BWP in the serving cell. The communication methodalso includes receiving a deactivation command for the semi-persistentCSI-RS and CSI-IM resource(s) configuration. The communication methodalso includes considering that the semi-persistent CSI-RS and CSI-IMresource(s) configuration is suspended when the associated DL BWP isbeing deactivated.

The communication method may further include receiving a radio resourcecontrol message comprising a parameter used for identifying theassociated DL BWP. The communication method may also further includeperforming CSI reporting based on the semi-persistent CSI-RS and CSI-IMresource(s) configuration, wherein CSI-RS resource(s) is for channelmeasurement, and CSI-IM resource(s) is for interference measurement.

A communication method of a base station apparatus that communicateswith a user equipment on one or more downlink bandwidth parts (DL BWPs)in a serving cell is also described. The communication method includestransmitting an activation command for semi-persistent channel stateinformation-reference signal (CSI-RS) and channel stateinformation-interference measurement (CSI-IM) resource(s) configuration,the semi-persistent CSI-RS and CSI-IM resource(s) configuration beingassociated with a DL BWP in the serving cell. The communication methodalso includes transmitting a deactivation command for thesemi-persistent CSI-RS and CSI-IM resource(s) configuration. Thecommunication method also includes considering that the semi-persistentCSI-RS and CSI-IM resource(s) configuration is suspended when theassociated DL BWP is being deactivated.

The communication method may further include transmitting a radioresource control message comprising a parameter used for identifying theassociated DL BWP. The communication method may also further includereceiving CSI reporting based on the semi-persistent CSI-RS and CSI-IMresource(s) configuration, wherein CSI-RS resource(s) is for channelmeasurement, and CSI-IM resource(s) is for interference measurement.

The 3rd Generation Partnership Project, also referred to as “3GPP,” is acollaboration agreement that aims to define globally applicabletechnical specifications and technical reports for third and fourthgeneration wireless communication systems. The 3GPP may definespecifications for next generation mobile networks, systems and devices.

3GPP Long Term Evolution (LTE) is the name given to a project to improvethe Universal Mobile Telecommunications System (UMTS) mobile phone ordevice standard to cope with future requirements. In one aspect, UMTShas been modified to provide support and specification for the EvolvedUniversal Terrestrial Radio Access (E-UTRA) and Evolved UniversalTerrestrial Radio Access Network (E-UTRAN).

At least some aspects of the systems and methods disclosed herein may bedescribed in relation to the 3GPP LTE, LTE-Advanced (LTE-A) and otherstandards (e.g., 3GPP Releases 8, 9, 10, 11 and/or 12). However, thescope of the present disclosure should not be limited in this regard. Atleast some aspects of the systems and methods disclosed herein may beutilized in other types of wireless communication systems.

A wireless communication device may be an electronic device used tocommunicate voice and/or data to a base station, which in turn maycommunicate with a network of devices (e.g., public switched telephonenetwork (PSTN), the Internet, etc.). In describing systems and methodsherein, a wireless communication device may alternatively be referred toas a mobile station, a UE, an access terminal, a subscriber station, amobile terminal, a remote station, a user terminal, a terminal, asubscriber unit, a mobile device, etc. Examples of wirelesscommunication devices include cellular phones, smart phones, personaldigital assistants (PDAs), laptop computers, netbooks, e-readers,wireless modems, etc. In 3GPP specifications, a wireless communicationdevice is typically referred to as a UE. However, as the scope of thepresent disclosure should not be limited to the 3GPP standards, theterms “UE” and “wireless communication device” may be usedinterchangeably herein to mean the more general term “wirelesscommunication device.” A UE may also be more generally referred to as aterminal device.

In 3GPP specifications, a base station is typically referred to as aNode B, an evolved Node B (eNB), a home enhanced or evolved Node B(HeNB) or some other similar terminology. As the scope of the disclosureshould not be limited to 3GPP standards, the terms “base station,” “NodeB,” “eNB,” “gNB” and “HeNB” may be used interchangeably herein to meanthe more general term “base station.” Furthermore, the term “basestation” may be used to denote an access point. An access point may bean electronic device that provides access to a network (e.g., Local AreaNetwork (LAN), the Internet, etc.) for wireless communication devices.The term “communication device” may be used to denote both a wirelesscommunication device and/or a base station. An eNB may also be moregenerally referred to as a base station device.

It should be noted that as used herein, a “cell” may be anycommunication channel that is specified by standardization or regulatorybodies to be used for International Mobile Telecommunications-Advanced(IMT-Advanced) and all of it or a subset of it may be adopted by 3GPP aslicensed bands (e.g., frequency bands) to be used for communicationbetween an eNB and a UE. It should also be noted that in E-UTRA andE-UTRAN overall description, as used herein, a “cell” may be defined as“combination of downlink and optionally uplink resources.” The linkingbetween the carrier frequency of the downlink resources and the carrierfrequency of the uplink resources may be indicated in the systeminformation transmitted on the downlink resources.

The 5th generation communication systems, dubbed NR (New Radiotechnologies) by 3GPP, envision the use of time/frequency/spaceresources to allow for services, such as eMBB (enhanced MobileBroad-Band) transmission, URLLC (Ultra Reliable and Low LatencyCommunication) transmission, and eMTC (massive Machine TypeCommunication) transmission. Also, in NR, one or more bandwidth parts(BWPs) may be specified (e.g., configured) for a serving cell. A userequipment (UE) may receive a downlink signal(s) in the BWP(s) of theserving cell. Also, the UE may transmit an uplink signal(s) in theBWP(s) of the serving cell.

In order for the services to use the time, frequency, and/or spaceresources efficiently, it would be useful to be able to efficientlycontrol downlink and/or uplink transmissions. Therefore, a procedure forefficient control of downlink and/or uplink transmissions should bedesigned. However, the detailed design of a procedure for downlinkand/or uplink transmissions has not been studied yet.

In some approaches, a user equipment (UE) may receive a radio resourcecontrol (RRC) message including first information used for configuringmore than one indices of downlink bandwidth parts (DL BWPs), wherein themore than one indices of the DL BWPs being used for indicating thatwhich BWPs are scheduled by using a DCI format for the downlink. Also,the UE may receive on a physical downlink control channel (PDCCH), theDCI format for downlink including second information. And, the UE mayperform, based on the first information and a value of the secondinformation, reception on the PDSCH in one DL BWP.

Various examples of the systems and methods disclosed herein are nowdescribed with reference to the Figures, where like reference numbersmay indicate functionally similar elements. The systems and methods asgenerally described and illustrated in the Figures herein could bearranged and designed in a wide variety of different implementations.Thus, the following more detailed description of severalimplementations, as represented in the Figures, is not intended to limitscope, as claimed, but is merely representative of the systems andmethods.

FIG. 1 is a block diagram illustrating one implementation of one or moregNBs 160 and one or more UEs 102 in which systems and methods fordownlink and/or uplink (re)transmissions may be implemented. The one ormore UEs 102 communicate with one or more gNBs 160 using one or morephysical antennas 122 a-n. For example, a UE 102 transmitselectromagnetic signals to the gNB 160 and receives electromagneticsignals from the gNB 160 using the one or more physical antennas 122a-n. The gNB 160 communicates with the UE 102 using one or more physicalantennas 180 a-n. In some implementations, the term “base station,”“eNB,” and/or “gNB” may refer to and/or may be replaced by the term“Transmission Reception Point (TRP).” For example, the gNB 160 describedin connection with FIG. 1 may be a TRP in some implementations.

The UE 102 and the gNB 160 may use one or more channels and/or one ormore signals 119, 121 to communicate with each other. For example, theUE 102 may transmit information or data to the gNB 160 using one or moreuplink channels 121. Examples of uplink channels 121 include a physicalshared channel (e.g., PUSCH (Physical Uplink Shared Channel)) and/or aphysical control channel (e.g., PUCCH (Physical Uplink ControlChannel)), etc. The one or more gNBs 160 may also transmit informationor data to the one or more UEs 102 using one or more downlink channels119, for instance. Examples of downlink channels 119 physical sharedchannel (e.g., PDSCH (Physical Downlink Shared Channel) and/or aphysical control channel (PDCCH (Physical Downlink Control Channel)),etc. Other kinds of channels and/or signals may be used.

Each of the one or more UEs 102 may include one or more transceivers118, one or more demodulators 114, one or more decoders 108, one or moreencoders 150, one or more modulators 154, a data buffer 104 and a UEoperations module 124. For example, one or more reception and/ortransmission paths may be implemented in the UE 102. For convenience,only a single transceiver 118, decoder 108, demodulator 114, encoder 150and modulator 154 are illustrated in the UE 102, though multipleparallel elements (e.g., transceivers 118, decoders 108, demodulators114, encoders 150 and modulators 154) may be implemented.

The transceiver 118 may include one or more receivers 120 and one ormore transmitters 158. The one or more receivers 120 may receive signalsfrom the gNB 160 using one or more antennas 122 a-n. For example, thereceiver 120 may receive and downconvert signals to produce one or morereceived signals 116. The one or more received signals 116 may beprovided to a demodulator 114. The one or more transmitters 158 maytransmit signals to the gNB 160 using one or more physical antennas 122a-n. For example, the one or more transmitters 158 may upconvert andtransmit one or more modulated signals 156.

The demodulator 114 may demodulate the one or more received signals 116to produce one or more demodulated signals 112. The one or moredemodulated signals 112 may be provided to the decoder 108. The UE 102may use the decoder 108 to decode signals. The decoder 108 may producedecoded signals 110, which may include a UE-decoded signal 106 (alsoreferred to as a first UE-decoded signal 106). For example, the firstUE-decoded signal 106 may comprise received payload data, which may bestored in a data buffer 104. Another signal included in the decodedsignals 110 (also referred to as a second UE-decoded signal 110) maycomprise overhead data and/or control data. For example, the secondUE-decoded signal 110 may provide data that may be used by the UEoperations module 124 to perform one or more operations.

In general, the UE operations module 124 may enable the UE 102 tocommunicate with the one or more gNBs 160. The UE operations module 124may include one or more of a UE scheduling module 126.

The UE scheduling module 126 may perform downlink reception(s) anduplink transmission(s). The downlink reception(s) include reception ofdata, reception of downlink control information, and/or reception ofdownlink reference signals. Also, the uplink transmissions includetransmission of data, transmission of uplink control information, and/ortransmission of uplink reference signals.

In a radio communication system, physical channels (uplink physicalchannels and/or downlink physical channels) may be defined. The physicalchannels (uplink physical channels and/or downlink physical channels)may be used for transmitting information that is delivered from a higherlayer.

For example, in uplink, a PRACH (Physical Random Access Channel) may bedefined. For instance, the PRACH may be used for a random accesspreamble (e.g., a message 1 (Msg.1)). In some approaches, the PRACH maybe used for an initial access connection establishment procedure, ahandover procedure, a connection re-establishment, a timing adjustment(e.g., a synchronization for an uplink transmission) and/or forrequesting an uplink shared channel (UL-SCH) resource (e.g., the uplinkPSCH (e.g., PUSCH) resource).

In another example, a PCCH (Physical Control Channel) may be defined.The PCCH may be used to transmit control information. In uplink, PCCH(e.g., Physical Uplink Control Channel (PUCCH)) is used for transmittingUplink Control Information (UCI). The UCI may include Hybrid AutomaticRepeat Request (HARQ-ACK), channel state information (CSI) and/or ascheduling request (SR). The HARQ-ACK is used for indicating a positiveacknowledgement (ACK) or a negative acknowledgment (NACK) for downlinkdata (e.g., Transport block(s), Medium Access Control Protocol Data Unit(MAC PDU) and/or Downlink Shared Channel (DL-SCH)). The CSI is used forindicating state of downlink channel (e.g., a downlink signal(s)). Here,the CSI reporting may be periodic and/or aperiodic. Also, the SR is usedfor requesting resources of uplink data (e.g., Transport block(s), MACPDU and/or Uplink Shared Channel (UL-SCH)).

Here, the DL-SCH and/or the UL-SCH may be a transport channel that isused in the MAC layer. Also, a transport block(s) (TB(s)) and/or a MACPDU may be defined as a unit(s) of the transport channel used in the MAClayer. For example, control, management, and/or process of HARQ may beperformed, in the MAC layer, per the transport block. The transportblock may be defined as a unit of data delivered from the MAC layer tothe physical layer. The MAC layer may deliver the transport block to thephysical layer (i.e., the MAC layer delivers the data as the transportblock to the physical layer). In the physical layer, the transport blockmay be mapped to one or more codewords.

In downlink, the PCCH (e.g., Physical Downlink Control Channel (PDCCH))may be used for transmitting downlink control information (DCI). Here,more than one DCI format may be defined (e.g., configured) for DCItransmission on the PCCH. Namely, fields may be defined in the DCIformat, and the fields are mapped to the information bits (e.g., DCIbits).

For example, a DCI format 1, a DCI format 1A, a DCI format 2, and/or aDCI format 2A that are used for scheduling of downlink physical sharedchannel(s) in a cell may be defined as the DCI format for the downlink.Here, the DCI format 1, the DCI format 1A, the DCI format 2, and/or theDCI format 2A described herein may be assumed to be included in a DCIformat A in some implementations for the sake of simplifyingdescription. Also, a DCI format X and/or a DCI format Y that are usedfor scheduling of downlink physical channel(s) in a cell may be definedas the DCI format (e.g., a fallback DCI format) for the downlink. Here,the DCI format X and/or the DCI format Y described herein may be assumedto be included in a DCI format B in some implementations for the sake ofsimplifying descriptions. Also, DCI format Z and/or a DCI format K thatare used for activating, deactivating, and/or switching a servingcell(s) (e.g., one or more secondary cell(s), one or more downlinksecondary cells, and/or one or more secondary downlink componentcarriers) and/or a bandwidth part(s) (e.g., one or more DL BWP(s)) maybe defined as the DCI format for the downlink. Here, the DCI format Zand/or the DCI format K described herein may be assumed to be includedin a DCI format C in some implementations for the sake of simplifyingdescriptions.

Also, a DCI format 0, and/or a DCI format 4 that are used for schedulingof uplink physical shared channel(s) in a cell may be defined as the DCIformat for the uplink. Here, the DCI format 0, and/or the DCI format 4described herein may be assumed to be included in a DCI format D in someimplementations for the sake of simplifying description. Also, a DCIformat L and/or a DCI format M that are used for scheduling of uplinkphysical channel(s) in a cell may be defined as the DCI format (e.g., afallback DCI format) for the uplink. Here, the DCI format L and/or theDCI format M described herein may be assumed to be included in a DCIformat E in some implementations for the sake of simplifyingdescriptions. Also, a DCI format O and/or a DCI format P that are usedfor activating, deactivating, and/or switching a serving cell(s) (e.g.,one or more secondary cell(s), one or more uplink secondary cells,and/or one or more secondary uplink component carriers) and/or abandwidth part(s) (e.g., one or more UL BWP(s)) may be defined as theDCI format for the uplink. Here, the DCI format O and/or the DCI formatP described herein may be assumed to be included in a DCI format F insome implementations for the sake of simplifying descriptions.

Here, as described above, a RNTI(s) assigned (e.g., by the gNB 160) tothe UE 102 may be used for transmission of DCI (e.g., the DCI format(s),DL control channel(s) (e.g., the PDCCH(s)). Namely, CRC (CyclicRedundancy Check) parity bits (also referred to simply as CRC), whichare generated based on DCI, are attached to DCI, and, after attachment,the CRC parity bits are scrambled by the RNTI(s). The UE 102 may attemptto decode (e.g., blind decoding, monitor, detect) DCI to which the CRCparity bits scrambled by the RNTI(s) are attached. Namely, the UE 102detects DL control channel (e.g., the PDCCH, the DCI, the DCI format(s))based on the blind decoding. That is, the UE 102 may decode the DLcontrol channel(s) with the CRC scrambled by the RNTI(s). In otherwords, the UE 102 may monitor the DL control channel(s) with theRNTI(s). Also, as described below, the UE 102 may detect the DCIformat(s) in a USS (i.e., the CORESET of a USS (i.e., a UE-specificsearch space)) and/or a CSS (i.e., the CORESET of a CSS (i.e., a commonsearch space, a UE-common search space)). Namely, the UE 102 may detectthe DCI format(s) with the RNTI(s).

Here, the RNTI(s) may include C-RNTI (Cell-RNTI, a first C-RNTI), SPSC-RNTI (Semi-Persistent Scheduling C-RNTI, a second C-RNTI), CS-RNTI(Configured Scheduling C-RNTI), C-RNTI for the fallback DCI format(s)(e.g., a third C-RNTI for the DCI format B and/or the DCI format E),C-RNTI for the activating/deactivating/switching DCI format(s) (a fourthC-RNTI for the DCI format C and/or the DCI format F), SI-RNTI (SystemInformation RNTI), P-RNTI (Paging RNTI), RA-RNTI (Random Access-RNTI),and/or Temporary C-RNTI.

For example, the C-RNTI may be a unique identification used foridentifying a RRC connection and/or scheduling. Also, the SPS C-RNTI maybe a unique identification used for semi-persistent scheduling. Also,the CS-RNTI may be a unique identification used for scheduling oftransmission based on a configured grant. Also, the C-RNTI for thefallback DCI format(s) may be a unique identification used forscheduling by the fallback DCI format(s). Also, the C-RNTI for theactivating/deactivating/switching DCI format(s) may be a uniqueidentification used for scheduling by the DCI format(s) used for theactivating/deactivating/switching of the serving cell(s) and/or theBWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)). Also, the SI-RNTI maybe used for identifying SI (i.e., SI message) mapped on the BCCH anddynamically carried on DL-SCH. Also, the SI-RNTI may be used forbroadcasting of SI. Also, the P-RNTI may be used for transmission ofpaging and/or SI change notification. Also, the RA-RNTI may be anidentification used for the random access procedure. Also, the TemporaryC-RNTI may be used for the random access procedure.

Also, for example, PSCH may be defined. For example, in a case that thedownlink PSCH resource (e.g., the PDSCH, the PDSCH resource) isscheduled by using the DCI format(s), the UE 102 may receive thedownlink data, on the scheduled downlink PSCH resource (e.g., the PDSCH,the PDSCH resource). Also, in a case that the uplink PSCH resource(e.g., the PUSCH, the PUSCH resource) is scheduled by using the DCIformat(s), the UE 102 transmits the uplink data, on the scheduled uplinkPSCH resource (e.g., the PUSCH, the PUSCH resource). Namely, thedownlink PSCH may be used to transmit the downlink data (i.e., DL-SCH, adownlink transport block(s)). And, the uplink PSCH may be used totransmit the uplink data (i.e., UL-SCH, an uplink transport block(s)).

Furthermore, the downlink PSCH (e.g., the PDSCH) and/or the uplink PSCH(e.g., the PUSCH) may be used to transmit information of a higher layer(e.g., a radio resource control (RRC)) layer, and/or a MAC layer). Forexample, the downlink PSCH (i.e., from the gNB 160 to the UE 102) and/orthe uplink PSCH (i.e., from the UE 102 to the gNB 160) may be used totransmit a RRC message (a RRC signal). Also, the downlink PSCH (i.e.,from the gNB 160 to the UE 102) and/or the uplink PSCH (i.e., from theUE 102 to the gNB 160) may be used to transmit a MAC control element (aMAC CE). Here, the RRC message that is transmitted from the gNB 160 indownlink may be common to multiple UEs 102 (and/or multiple servingcells) within a cell (referred as a common RRC message). Also, the RRCmessage that is transmitted from the gNB 160 may be dedicated to acertain UE 102 (and/or a serving cell (i.e., a serving cell-dedicated))(referred as a dedicated RRC message). The RRC message and/or the MAC CEare also referred to as a higher layer signal.

In some approaches, a PBCH (physical broadcast channel, (e.g., primaryPBCH)) may be defined. For example, the PBCH may be used forbroadcasting the MIB (master information block). For instance, the MIBmay be used by multiple UEs 102 and may include system informationtransmitted on the BCH (broadcast channel). Also, the MIB may includeinformation (e.g., an information block) for configuring a secondaryPBCH. Furthermore, the MIB may include information (e.g., an informationblock) for configuring the downlink PSCH (e.g., PDSCH). For example, thePBCH (e.g., MIB) may be used for carrying, at least, informationindicating a SFN (system frame number).

Here, the system information may be divided into the MIB and a number ofSIB(s) (system information block(s)). The MIB may include a limitednumber of most essential and/or most frequently transmitted information(e.g., parameter(s)) that are needed to acquire other information fromthe cell. Namely, the PBCH (e.g., MIB) may include minimum systeminformation. Also, the SIB(s) may be carried in a system informationmessage. For example, the SIB(s) may be transmitted on the secondaryPBCH and/or the downlink PSCH (e.g., the PDSCH). The SIB(s) (e.g.,System Information Block Type 2) may include remaining minimum systeminformation (i.e., RMSI). For example, the SIB(s) (e.g., SystemInformation Block Type 2) may contain radio resource configurationinformation that is common for multiple UEs 102.

In some approaches, in downlink, a SS (Synchronization Signal) may bedefined. The SS may be used for synchronizing downlink time-frequency (atime domain and/or a frequency domain). The SS may include a PSS(Primary Synchronization Signal). Additionally or alternatively, the SSmay include a SSS (Secondary Synchronization Signal). For example, thePSS, the SSS, and/or the PBCH may be used for identifying a physicallayer cell identity.

In the radio communication for uplink, UL RS(s) may be used as uplinkphysical signal(s). The uplink physical signal may not be used totransmit information that is provided from the higher layer, but is usedby a physical layer. For example, the UL RS(s) may include thedemodulation reference signal(s), the UE-specific reference signal(s),the sounding reference signal(s) (the SRS(s)) and/or the beam-specificreference signal(s). The demodulation reference signal(s) may includethe demodulation reference signal(s) associated with transmission of theuplink physical channel (e.g., the PUSCH and/or the PUCCH).

Also, in the radio communication for downlink, DL RS(s) may be used asdownlink physical signal(s). The downlink physical signal may not beused to transmit information that is provided from the higher layer, butis used by a physical layer. For example, the DL RS(s) may include thecell-specific reference signal(s), the UE-specific reference signal(s),the demodulation reference signal(s), and/or the channel stateinformation reference signal(s) (the CSI-RS(s)). The UE-specificreference signal may include the UE-specific reference signal(s)associated with transmission of the downlink physical channel (e.g., thePDSCH and/or the PDCCH). Also, the demodulation reference signal(s) mayinclude the demodulation reference signal(s) associated withtransmission of the downlink physical channel (e.g., the PDSCH and/orthe PDCCH). Also, the CSI-RS may include Non-zero power Channel StateInformation-Reference signal(s) (NZP CSI-RS), and/or Zero power ChannelState Information-Reference signal (ZP CSI-RS).

Here, the downlink physical channel(s) and/or the downlink physicalsignal(s) described herein may be assumed to be included in a downlinksignal (i.e., a DL signal(s)) in some implementations for the sake ofsimple descriptions. Also, the uplink physical channel(s) and/or theuplink physical signal(s) described herein may be assumed to be includedin an uplink signal (i.e. an UL signal(s)) in some implementations forthe sake of simple descriptions.

The UE operations module 124 may provide information 148 to the one ormore receivers 120. For example, the UE operations module 124 may informthe receiver(s) 120 when to receive retransmissions.

The UE operations module 124 may provide information 138 to thedemodulator 114. For example, the UE operations module 124 may informthe demodulator 114 of a modulation pattern anticipated fortransmissions from the gNB 160.

The UE operations module 124 may provide information 136 to the decoder108. For example, the UE operations module 124 may inform the decoder108 of an anticipated encoding for transmissions from the gNB 160.

The UE operations module 124 may provide information 142 to the encoder150. The information 142 may include data to be encoded and/orinstructions for encoding. For example, the UE operations module 124 mayinstruct the encoder 150 to encode transmission data 146 and/or otherinformation 142. The other information 142 may include PDSCH HARQ-ACKinformation.

The encoder 150 may encode transmission data 146 and/or otherinformation 142 provided by the UE operations module 124. For example,encoding the data 146 and/or other information 142 may involve errordetection and/or correction coding, mapping data to space, time and/orfrequency resources for transmission, multiplexing, etc. The encoder 150may provide encoded data 152 to the modulator 154.

The UE operations module 124 may provide information 144 to themodulator 154. For example, the UE operations module 124 may inform themodulator 154 of a modulation type (e.g., constellation mapping) to beused for transmissions to the gNB 160. The modulator 154 may modulatethe encoded data 152 to provide one or more modulated signals 156 to theone or more transmitters 158.

The UE operations module 124 may provide information 140 to the one ormore transmitters 158. This information 140 may include instructions forthe one or more transmitters 158. For example, the UE operations module124 may instruct the one or more transmitters 158 when to transmit asignal to the gNB 160. For instance, the one or more transmitters 158may transmit during a UL subframe. The one or more transmitters 158 mayupconvert and transmit the modulated signal(s) 156 to one or more gNBs160.

Each of the one or more gNBs 160 may include one or more transceivers176, one or more demodulators 172, one or more decoders 166, one or moreencoders 109, one or more modulators 113, a data buffer 162 and a gNBoperations module 182. For example, one or more reception and/ortransmission paths may be implemented in a gNB 160. For convenience,only a single transceiver 176, decoder 166, demodulator 172, encoder 109and modulator 113 are illustrated in the gNB 160, though multipleparallel elements (e.g., transceivers 176, decoders 166, demodulators172, encoders 109 and modulators 113) may be implemented.

The transceiver 176 may include one or more receivers 178 and one ormore transmitters 117. The one or more receivers 178 may receive signalsfrom the UE 102 using one or more physical antennas 180 a-n. Forexample, the receiver 178 may receive and downconvert signals to produceone or more received signals 174. The one or more received signals 174may be provided to a demodulator 172. The one or more transmitters 117may transmit signals to the UE 102 using one or more physical antennas180 a-n. For example, the one or more transmitters 117 may upconvert andtransmit one or more modulated signals 115.

The demodulator 172 may demodulate the one or more received signals 174to produce one or more demodulated signals 170. The one or moredemodulated signals 170 may be provided to the decoder 166. The gNB 160may use the decoder 166 to decode signals. The decoder 166 may produceone or more decoded signals 164, 168. For example, a first eNB-decodedsignal 164 may comprise received payload data, which may be stored in adata buffer 162. A second eNB-decoded signal 168 may comprise overheaddata and/or control data. For example, the second eNB-decoded signal 168may provide data (e.g., PDSCH HARQ-ACK information) that may be used bythe gNB operations module 182 to perform one or more operations.

In general, the gNB operations module 182 may enable the gNB 160 tocommunicate with the one or more UEs 102. The gNB operations module 182may include one or more of a gNB scheduling module 194. The gNBscheduling module 194 may perform scheduling of downlink and/or uplinktransmissions as described herein.

The gNB operations module 182 may provide information 188 to thedemodulator 172. For example, the gNB operations module 182 may informthe demodulator 172 of a modulation pattern anticipated fortransmissions from the UE(s) 102.

The gNB operations module 182 may provide information 186 to the decoder166. For example, the gNB operations module 182 may inform the decoder166 of an anticipated encoding for transmissions from the UE(s) 102.

The gNB operations module 182 may provide information 101 to the encoder109. The information 101 may include data to be encoded and/orinstructions for encoding. For example, the gNB operations module 182may instruct the encoder 109 to encode information 101, includingtransmission data 105.

The encoder 109 may encode transmission data 105 and/or otherinformation included in the information 101 provided by the gNBoperations module 182. For example, encoding the data 105 and/or otherinformation included in the information 101 may involve error detectionand/or correction coding, mapping data to space, time and/or frequencyresources for transmission, multiplexing, etc. The encoder 109 mayprovide encoded data 111 to the modulator 113. The transmission data 105may include network data to be relayed to the UE 102.

The gNB operations module 182 may provide information 103 to themodulator 113. This information 103 may include instructions for themodulator 113. For example, the gNB operations module 182 may inform themodulator 113 of a modulation type (e.g., constellation mapping) to beused for transmissions to the UE(s) 102. The modulator 113 may modulatethe encoded data 111 to provide one or more modulated signals 115 to theone or more transmitters 117.

The gNB operations module 182 may provide information 192 to the one ormore transmitters 117. This information 192 may include instructions forthe one or more transmitters 117. For example, the gNB operations module182 may instruct the one or more transmitters 117 when to (or when notto) transmit a signal to the UE(s) 102. The one or more transmitters 117may upconvert and transmit the modulated signal(s) 115 to one or moreUEs 102.

It should be noted that a DL subframe may be transmitted from the gNB160 to one or more UEs 102 and that a UL subframe may be transmittedfrom one or more UEs 102 to the gNB 160. Furthermore, both the gNB 160and the one or more UEs 102 may transmit data in a standard specialsubframe.

It should also be noted that one or more of the elements or partsthereof included in the eNB(s) 160 and UE(s) 102 may be implemented inhardware. For example, one or more of these elements or parts thereofmay be implemented as a chip, circuitry or hardware components, etc. Itshould also be noted that one or more of the functions or methodsdescribed herein may be implemented in and/or performed using hardware.For example, one or more of the methods described herein may beimplemented in and/or realized using a chipset, an application-specificintegrated circuit (ASIC), a large-scale integrated circuit (LSI) orintegrated circuit, etc.

FIG. 2 shows examples of multiple numerologies. As shown in FIG. 2,multiple numerologies (i.e., multiple subcarrier spacing) may besupported. For example, μ (e.g., a subcarrier space configuration) and acyclic prefix (e.g., the μ and the cyclic prefix for a carrier bandwidthpart) may be configured by higher layer parameters (i.e., a RRC message)for the downlink and/or the uplink. Here, 15 kHz may be a referencenumerology. For example, an RE of the reference numerology may bedefined with a subcarrier spacing of 15 kHz in a frequency domain and2048 Ts+CP length (e.g., 160 Ts or 144 Ts) in a time domain, where Tsdenotes a baseband sampling time unit defined as 1/(15000*2048) seconds.

Also, a number of OFDM symbol(s) per slot (N_(symb) ^(slot)) may bedetermined based on the μ (e.g., the subcarrier space configuration).Here, for example, a slot configuration 0 (i.e., the number of OFDMsymbols per slot may be 14) and/or a slot configuration (i.e., thenumber of OFDM symbols per slot may be 7) may be defined.

FIG. 3 is a diagram illustrating one example of a resource grid andresource block (e.g., for the downlink and/or the uplink). The resourcegrid illustrated in FIG. 3 may be utilized in some implementations ofthe systems and methods disclosed herein.

In FIG. 3, one subframe may include N_(symbol) ^(subframe,μ) symbols.Also, a resource block may include a number of resource elements (RE).Here, in the downlink, the OFDM access scheme with cyclic prefix (CP)may be employed, which may be also referred to as CP-OFDM. A downlinkradio frame may include multiple pairs of downlink resource blocks (RBs)which is also referred to as physical resource blocks (PRBs). Thedownlink RB pair is a unit for assigning downlink radio resources,defined by a predetermined bandwidth (RB bandwidth) and a time slot. Thedownlink RB pair may include two downlink RBs that are continuous in thetime domain. And, the downlink RB may include twelve sub-carriers infrequency domain and seven (for normal CP) or six (for extended CP) OFDMsymbols in time domain. A region defined by one sub-carrier in frequencydomain and one OFDM symbol in time domain is referred to as a resourceelement (RE) and is uniquely identified by the index pair (k,l), where kand l are indices in the frequency and time domains, respectively.

Also, in the uplink, in addition to CP-OFDM, a Single-Carrier FrequencyDivision Multiple Access (SC-FDMA) access scheme may be employed, whichis also referred to as Discrete Fourier Transform-Spreading OFDM(DFT-S-OFDM). An uplink radio frame may include multiple pairs of uplinkresource blocks. The uplink RB pair is a unit for assigning uplink radioresources, defined by a predetermined bandwidth (RB bandwidth) and atime slot. The uplink RB pair may include two uplink RBs that arecontinuous in the time domain. The uplink RB may include twelvesub-carriers in frequency domain and seven (for normal CP) or six (forextended CP) OFDM/DFT-S-OFDM symbols in time domain. A region defined byone sub-carrier in the frequency domain and one OFDM/DFT-S-OFDM symbolin the time domain is referred to as a resource element (RE) and isuniquely identified by the index pair (k,l) in a slot, where k and l areindices in the frequency and time domains respectively.

Each element in the resource grid (e.g., antenna port p) and thesubcarrier configuration μ is called a resource element and is uniquelyidentified by the index pair (k,l) where k=0, . . . , N_(RB) ^(μ)N_(SC)^(RB)−1 is the index in the frequency domain and l refers to the symbolposition in the time domain. The resource element (k,l) on the antennaport p and the subcarrier spacing configuration μ is denoted(k,l)_(p),μ. The physical resource block is defined as N_(SC) ^(RB)=12consecutive subcarriers in the frequency domain. The physical resourceblocks are numbered from 0 to N_(RB) ^(μ)−1 in the frequency domain. Therelation between the physical resource block number n_(PRB) in thefrequency domain and the resource element (k,l) is given by

$n_{PRB} = {\left\lfloor \frac{k}{N_{SC}^{RB}} \right\rfloor.}$

FIG. 4 shows examples of resource regions (e.g., resource region of thedownlink). One or more sets of PRB(s) (e.g., a control resource set(e.g., CORESET)) may be configured for DL control channel monitoring(e.g., the PDCCH monitoring). For example, the control resource set(e.g., the CORESET) is, in the frequency domain and/or the time domain,a set of PRBs within which the UE 102 attempts to decode the DCI (e.g.,the DCI format(s), the PDCCH(s)), where the PRBs may or may not befrequency contiguous and/or time contiguous, a UE 102 may be configuredwith one or more control resource sets (i.e., the CORESETs) and one DCImessage may be mapped within one control resource set. In thefrequency-domain, a PRB is the resource unit size (which may or may notinclude DM-RS) for the DL control channel.

The UE 102 may monitor a set of candidates of the DL control channel(s)in the control resource set (e.g., the CORESET). Here, the candidates ofDL control channel (s) may be candidates for which the DL controlchannel(s) may possibly be mapped, assigned, and/or transmitted. Forexample, a candidate of the DL control channel(s) is composed of one ormore control channel elements (CCEs). Here, the term “monitor” meansthat the UE 102 attempts to decode each DL control channel(s) in the setof candidates of the DL control channel(s) in accordance with all theDCI format(s) to be monitored.

The set of candidates of the DL control channel(s) (e.g., the PDCCH(s),the PDCCH candidates, the CORESET) for the UE 102 monitors may be alsoreferred to as a search space(s). That is, the search space(s) is a setof resource (e.g., CORESET) that may possibly be used for transmissionof the DL control channel(s). The UE 102 may monitor the set ofcandidates of the DL control channel(s) according to the search space(s)where monitoring implies attempting to detect each DL control channel(s)candidate according to the monitored DCI formats.

Here, the common search space (the CSS, the UE-common search space)and/or the user-equipment search space (the USS, the UE-specific searchspace) are defined (or set, configured) in a region(s) of DL controlchannel(s) (e.g., the DL control channel monitoring regions, CORESET).For example, the CSS may be used for transmission of DCI to a pluralityof the UEs 102. That is, the CSS may be defined by a resource common toa plurality of the UEs 102. Here, the gNB 160 may configure, by usingthe PBCH (e.g., the MIB), the PDSCH (e.g., the SIB type 2), and/or theRRC message (e.g., the dedicated RRC message), the CSS (e.g., the regionof the CSS, the control resource set of the CSS). Also, the gNB 160 maytransmit, in the CSS, DCI format(s) to a plurality of the UEs 102. Thesets of candidates of DL control channel(s) that the UE 102 monitors maybe defined in terms of DL control channel(s) CSS. A DL controlchannel(s) CSS at CCE aggregation level may be defined by the set ofcandidates of the DL control channel(s).

Here, the CSS may be used for transmission of DCI to a specific UE 102.That is, the gNB 160 may transmit, in the CSS, DCI format(s) intendedfor a plurality of the UEs 102 and/or DCI format(s) intended for aspecific UE 102.

The USS may be used for transmission of DCI to a specific UE 102. Thatis, the USS is defined by a resource dedicated to a certain UE 102. TheUSS may be defined independently for each UE 102. For example, the USSmay be composed of CCEs having numbers that are determined based on aRadio Network Temporary Identifier (RNTI) (e.g., the C-RNTI), a slotnumber in a radio frame, an aggregation level, and/or the like. TheRNTI(s) may be assigned by the gNB 160. Namely, each of the USSscorresponding to each of the RNTI(s) described below may be defined. Forexample, the USS may be defined for the DCI format(s) with CRC scrambledby the C-RNTI and/or the CS-RNTI. Also, for example, the gNB 160 mayconfigure, by using the PBCH (e.g., the MIB), the PDSCH (e.g., the SIBtype 2), and/or the RRC message (e.g., the dedicated RRC message), theUSS (e.g., the region of the USS, the control resource set of the USS).Also, the gNB 160 may transmit, in the USS, DCI format(s) intended for aspecific UE 102. The sets of candidates of DL control channel(s) thatthe UE 102 monitors may be defined in terms of DL control channel(s)USS. A DL control channel(s) USS at CCE aggregation level may be definedby the set of candidates of the DL control channel(s).

Namely, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information used for configuring one or morecontrol resource sets (i.e., one or more CORESETs). Also, for each ofthe one or more control resource sets, the CSS(s) and/or the USS may bemapped. For example, in a CORESET (e.g., in a given CORESET), at least,two types of search space (i.e., the CSS and the USS (e.g., a set of theCSS and a set of USS)) may be configured to the UE 102. Also, forexample, the gNB 160 may transmit information used for configuring theoccasion(s) of DL control channel(s) monitoring (the control resourceset monitoring). Here, the DL control channel(s) may be the PCCH(s)(e.g., the PDCCH(s)). Also, the occasion(s) may correspond to asubframe, a slot, a sub-slot, and/or a symbol. Namely, the occasion(s)may correspond to a position(s) (e.g., a timing, a time resource, a timelocation, a time index, an index of the subframe(s), the slot(s), thesub-slot(s), and/or the symbol(s)). Also, for example, the occasion(s)may correspond to a periodicity (e.g., a periodicity of a subframe, aslot, a sub-slot, and/or a symbol) for which the UE 102 monitors thePDCCH. Namely, the gNB 160 may configure, to the UE 102, a periodicityfor monitoring of PDCCH (i.e., PDCCH monitoring periodicity, PDCCHmonitoring occasion(s)).

For example, the gNB 160 may transmit, e.g., by using the PBCH (e.g.,the MIB), the PDSCH (e.g., the SIB type 2 (i.e., RMSI)), and/or the RRCmessage (e.g., the dedicated RRC message), information used forconfiguring the occasion(s) (i.e., the PDCCH monitoring periodicity, thePDCCH monitoring occasion(s)). And, the UE 102 may monitor the PDCCHbased on the information used for configuring the occasion(s). Namely,for each search space set in the CORESET, the UE 102 may determine thePDCCH monitoring occasion(s) based on the information used forconfiguring the occasion(s).

Here, the information used for configuring the occasion(s) may beconfigured per serving cell. Namely, the information used forconfiguring the occasion(s) may be configured for each of the servingcells (e.g., each of the primary cell and the one or more secondarycells). Also, the information used for configuring the occasion(s) maybe configured per BWP (e.g., per BWP in the serving cell(s)). Namely,the information used for configuring the occasion(s) may be configuredfor each of the BWPs (e.g., each of the DL BWP(s)). Also, theinformation used for configuring the occasion(s) may be configured DCIformat. For example, the information used for configuring theoccasion(s) may be configured for each of the DCI formats (e.g., the DCIformat A, the DCI format C, the DCI format D, and/or the DCI format F).Also, the information used for configuring the occasion(s) may beconfigured each of the DCI format(s) for the downlink (e.g., the DCIformat A, and/or the DCI format C) and the DCI format(s) for the uplink(e.g., the DCI format D, and/or the DCI format F). Also, the informationused for configuring the occasion(s) may be configured for each of thesearch spaces (e.g., the USS, and/or the CSS(s)).

Here, the search space (e.g., the CSS and/or the USS (e.g., a set of theCSS and/or a set of USS)) may be defined based on the number of PDCCHcandidates for each aggregation level (e.g., 1, 2, 4, 8, 16), the PDCCHmonitoring occasion(s) for the set of the search space(s), and/or eachset of search spaces associated with the CORESET. For example, the gNB160 may configure the number of PDCCH candidates for each aggregationlevel. Also, the gNB 160 may configure the PDCCH monitoring occasion(s)for the set of the search space(s). Also, the gNB 160 may configure eachset of search spaces associated with the CORESET. Namely, for example,an index of the search space may be defined (e.g., computed) based onthe number of PDCCH candidates for each aggregation level (e.g., 1, 2,4, 8, 16), the PDCCH monitoring occasion(s) for the set of the searchspace(s), and/or each set of search spaces associated with the CORESET.

Here, as described below, the DCI format A may be used for activatingand/or deactivating a serving cell(s) (e.g., one or more secondarycell(s), one or more downlink secondary cells, and/or one or moresecondary downlink component carriers). Also, the DCI format A may beused for activating and/or deactivating a bandwidth part(s) (e.g., oneor more BWPs in a serving cell(s), one or more DL BWPs in a servingcell(s)). Also, the C-RNTI (i.e., a first C-RNTI), the SPS C-RNTI (i.e.,a second C-RNTI), and/or the CS-RNTI may be used to transmit the DCIformat A. Here, the DCI format A may be monitored (e.g., transmitted,mapped) in the CSS and the USS.

For example, the DCI format A may include resource assignmentinformation (e.g., the resource assignment of the PDSCH). For example,the DCI format A may include frequency domain resource assignmentinformation. Also, the DCI format A may include time domain resourceassignment information. Also, the DCI format A may include informationused for indicating a modulation and coding scheme (e.g., a MCSinformation, a MCS field(s)). Also, the DCI format A may includeinformation (e.g., a new data indicator) used for indicating whether atransmission is a new transmission or not. Also, the DCI format A mayinclude information (e.g., a CSI request, a CSI request field(s)) usedfor requesting transmission of CSI (i.e., CSI report, aperiodic CSIreport (i.e., aperiodic CSI reporting)) on the PUSCH and/or the PUCCH.Also, the DCI format A may include information (i.e., a carrierindicator, a carrier indicator field(s), e.g., 3-bit informationfield(s)) used for indicating a serving cell(s) (e.g., a carrier(s)).For example, the carrier indicator may be used for indicating theserving cell(s) in which the corresponding PDSCH(s) is scheduled. Also,the DCI format A may include information (i.e., a BWP indicator, a BWPindicator field(s), e.g., 1-bit or 2-bit information field(s)) used forindicating a BWP(s). For example, the BWP indicator may be used forindicating the BWP(s) (e.g., the DL BWP(s)) that is activated. Also, theBWP indicator may be used for indicating the DL BWP(s) in which thecorresponding PDSCH(s) is scheduled. Also, the DCI format A may includeinformation used for indicating a transmission power control (TPC)command for the PUCCH.

Also, as described above, the DCI format B may be used for scheduling ofthe downlink PSCH (e.g., the PDSCH). Namely, the DCI format B may be ascheduling DCI. Also, the C-RNTI (i.e., the first C-RNTI), SPS C-RNTI(i.e., the second C-RNTI), and/or the CS-RNTI may be used to transmitthe DCI format B. Here, the DCI format B may be monitored (e.g.,transmitted, mapped) in the CSS only.

For example, the DCI format B may include resource assignmentinformation (e.g., the resource assignment of the PDSCH). For example,the DCI format B may include frequency domain resource assignmentinformation. Also, the DCI format B may include time domain resourceassignment information. Also, the DCI format B may include informationused for indicating a modulation and coding scheme (e.g., a MCSinformation, a MCS field(s)). Also, the DCI format B may includeinformation (e.g., a new data indicator) used for indicating whether atransmission is a new transmission or not. Also, the DCI format B mayinclude information (e.g., a CSI request, a CSI request field(s)) usedfor requesting transmission of CSI (i.e., CSI report, aperiodic CSIreport (i.e., aperiodic CSI reporting)) on the PUSCH and/or the PUCCH.Also, the DCI format B may include information used for indicating atransmission power control (TPC) command for the PUCCH. Namely, the DCIformat B may not include the carrier indicator (e.g., the carrierindicator field(s)). Also, the DCI format B may not include the BWPindicator (e.g., the BWP indicator field(s)).

Also, as described above, the DCI format C may be used for activating,deactivating, and/or switching the serving cell(s) and/or the BWP(s).Namely, the DCI format B may be an activating/deactivating/switchingDCI. Here, the C-RNTI (i.e., the first C-RNTI), SPS C-RNTI (i.e., thesecond C-RNTI), and/or the CS-RNTI may be used to transmit the DCIformat C. Also, the DCI format C may be monitored (e.g., transmitted,mapped) in the CSS and the USS.

And, in a case that the DCI format A is received (i.e., based on thedetection of the DCI format A), the UE 102 may receive (i.e., decode,detect) the scheduled PDSCH. Also, in a case that the DCI format B isreceived (i.e., based on the detection of the DCI format B), the UE 102may receive (i.e., decode, detect) the scheduled PDSCH. Also, in a casethat the DCI format C is received (i.e., based on the detection of theDCI format C), the UE 102 may perform activation, deactivation and/orswitching for the indicated serving cell(s) (e.g., the serving cell(s)used for receiving the downlink signal, and/or a downlinkcommunication).

Here, for example, an index (e.g., a BWP index) of an initial activeBWP(s) (e.g., an initial active DL BWP(s)) (e.g., if the default BWP(s)is not configured) may be corresponding to a value of “00”. Namely, avalue of “0” may be applied for the initial active BWP(s) (e.g., theinitial active DL BWP(s)) (e.g., if the default BWP(s) is notconfigured). Namely, the value of “0” may be the index (e.g., the BWPindex) of the initial active BWP(s) (e.g., the initial active DLBWP(s)). Also, for example, the index (e.g., the BWP index) of thedefault BWP(s) (e.g., the default DL BWP(s)) (e.g., if the defaultBWP(s) is configured) may be corresponding to the value of “00”. Namely,the value of “0” may be applied for the default BWP(s) (e.g., thedefault DL BWP(s)) (e.g., if the default BWP(s) is configured). Namely,the value of “0” may be the index (e.g., the BWP index) of the defaultBWP(s) (e.g., the default DL BWP(s)). Namely, the value of “0” may beused for the index (e.g., the BWP index) of the initial active BWP(s)(e.g., the initial active DL BWP(s)). Namely, the value of “0” may beused for the index (e.g., the BWP index) of the default BWP(s) (e.g.,the default DL BWP(s)).

Here, the index of the BWP(s) (e.g., the index of the DL BWP(s) (e.g.,the index of the initial active DL BWP(s), the index of the default DLBWP(s), and/or the index of the active DL BWP) may be the identifier ofBWP(s) (e.g., DL BWP ID). Also, the index of the BWP(s) (e.g., the indexof the DL BWP(s) (e.g., the index of the initial active DL BWP(s), theindex of the default DL BWP(s), and/or the index of the active DLBWP(s)) may be an index of BWP(s) for the PDCCH. Also, the index of theBWP(s) (e.g., the index of the DL BWP(s) (e.g., the index of the initialactive DL BWP(s), the index of the default DL BWP(s), and/or the indexof the active DL BWP(s)) may be an index of BWP(s) for the PDSCH.Namely, the index of the BWP(s) (e.g., the index of the DL BWP(s) (e.g.,the index of the initial active DL BWP(s), the index of the default DLBWP(s), and/or the index of the active DL BWP(s)) may be an index of thePDCCH (e.g., the PDCCH BWP). Also, the index of the BWP(s) (e.g., theindex of the DL BWP(s) (e.g., the index of the initial active DL BWP(s),the index of the default DL BWP(s), and/or the index of the active DLBWP(s)) may be an index of the PDSCH (e.g., the PDSCH BWP).

Here, as described below, the DCI format D may be used for activatingand/or deactivating a serving cell(s) (e.g., one or more secondarycell(s), one or more uplink secondary cells, and/or one or more uplinkcomponent carriers). Also, the DCI format D may be used for activatingand/or deactivating a bandwidth part(s) (e.g., one or more BWPs in aserving cell(s), one or more UL BWPs in a serving cell(s)). Also, theC-RNTI (i.e., a first C-RNTI), the SPS C-RNTI (i.e., a second C-RNTI),and/or the CS-RNTI may be used to transmit the DCI format D. Here, theDCI format A may be monitored (e.g., transmitted, mapped) in the CSS andthe USS.

For example, the DCI format D may include resource assignmentinformation (e.g., the resource assignment of the PUSCH). For example,the DCI format D may include frequency domain resource assignmentinformation. Also, the DCI format D may include time domain resourceassignment information. Also, the DCI format D may include informationused for indicating a modulation and coding scheme (e.g., a MCSinformation, a MCS field(s)). Also, the DCI format A may includeinformation (e.g., a new data indicator) used for indicating whether atransmission is a new transmission or not. Also, the DCI format D mayinclude information (e.g., a CSI request, a CSI request field(s)) usedfor requesting transmission of CSI (i.e., CSI report, aperiodic CSIreport (i.e., aperiodic CSI reporting)) on the PUSCH and/or the PUCCH.Also, the DCI format D may include information (i.e., a carrierindicator, a carrier indicator field(s), e.g., 3-bit informationfield(s)) used for indicating a serving cell(s) (e.g., a carrier(s)).For example, the carrier indicator may be used for indicating theserving cell(s) in which the corresponding PUSCH(s) is scheduled. Also,the DCI format D may include information (i.e., a BWP indicator, a BWPindicator field(s), e.g., 1-bit or 2-bit information field(s)) used forindicating a BWP(s). For example, the BWP indicator may be used forindicating the BWP(s) (e.g., the UL BWP(s)) that is activated. Also, theBWP indicator may be used for indicating the UL BWP(s) in which thecorresponding PUSCH(s) is scheduled. Also, the DCI format D may includeinformation used for indicating a transmission power control (TPC)command for the PUSCH.

Also, as described above, the DCI format E may be used for scheduling ofthe uplink PSCH (e.g., the PUSCH). Namely, the DCI format E may be ascheduling DCI. Also, the C-RNTI (i.e., the first C-RNTI), SPS C-RNTI(i.e., the second C-RNTI), and/or the CS-RNTI may be used to transmitthe DCI format E. Here, the DCI format E may be monitored (e.g.,transmitted, mapped) in the CSS only.

For example, the DCI format E may include resource assignmentinformation (e.g., the resource assignment of the PUSCH). For example,the DCI format E may include frequency domain resource assignmentinformation. Also, the DCI format E may include time domain resourceassignment information. Also, the DCI format E may include informationused for indicating a modulation and coding scheme (e.g., a MCSinformation, a MCS field(s)). Also, the DCI format E may includeinformation (e.g., a new data indicator) used for indicating whether atransmission is a new transmission or not. Also, the DCI format E mayinclude information (e.g., a CSI request, a CSI request field(s)) usedfor requesting transmission of CSI (i.e., CSI report, aperiodic CSIreport (i.e., aperiodic CSI reporting)) on the PUSCH and/or the PUCCH.Also, the DCI format E may include information used for indicating atransmission power control (TPC) command for the PUCCH. Namely, the DCIformat E may not include the carrier indicator (e.g., the carrierindicator field(s)). Also, the DCI format E may not include the BWPindicator (e.g., the BWP indicator field(s)).

Also, as described above, the DCI format F may be used for activating,deactivating, and/or switching the serving cell(s) and/or the BWP(s).Namely, the DCI format F may be an activating/deactivating/switchingDCI. Here, the C-RNTI (i.e., the first C-RNTI), SPS C-RNTI (i.e., thesecond C-RNTI), and/or the CS-RNTI may be used to transmit the DCIformat F. Also, the DCI format F may be monitored (e.g., transmitted,mapped) in the CSS and the USS.

And, in a case that the DCI format D is received (i.e., based on thedetection of the DCI format D), the UE 102 may perform the PUSCHtransmission. Also, in a case that the DCI format E is received (i.e.,based on the detection of the DCI format E), the UE 102 may perform thePUSCH transmission. Also, in a case that the DCI format F is received(i.e., based on the detection of the DCI format F), the UE 102 mayperform activation, deactivation and/or switching for the indicatedserving cell(s) (e.g., the serving cell(s) used for receiving thedownlink signal and/or the downlink communication, and/or the servingcell(s) used for transmitting the uplink signal and/or the uplinkcommunication).

Also, for example, an index (e.g., a BWP index) of the initial activeBWP(s) (e.g., an initial active UL BWP(s)) (e.g., if the default BWP(s)is not configured) may be corresponding to a value of “00”. Namely, avalue of “0” may be applied for the initial active BWP(s) (e.g., theinitial active UL BWP(s)) (e.g., if the default BWP(s) is notconfigured). Namely, the value of “0” may be the index (e.g., the BWPindex) of the initial active BWP(s) (e.g., the initial active ULBWP(s)). Also, for example, the index (e.g., the BWP index) of thedefault BWP(s) (e.g., the default UL BWP(s)) (e.g., if the defaultBWP(s) is configured) may be corresponding to the value of “00”. Namely,the value of “0” may be applied for the default BWP(s) (e.g., thedefault UL BWP(s)) (e.g., if the default BWP(s) is configured). Namely,the value of “0” may be the index (e.g., the BWP index) of the defaultBWP(s) (e.g., the default UL BWP(s)). Namely, the value of “0” may beused for the index (e.g., the BWP index) of the initial active BWP(s)(e.g., the initial active UL BWP(s)). Namely, the value of “0” may beused for the index (e.g., the BWP index) of the default BWP(s) (e.g.,the default UL BWP(s)).

Here, the index of the BWP(s) (e.g., the index of the UL BWP(s) (e.g.,the index of the initial active UL BWP(s), the index of the default ULBWP(s), and/or the index of the active UL BWP(s)) may be the identifierof BWP(s) (e.g., UL BWP ID). Also, the index of the BWP(s) (e.g., theindex of the UL BWP(s) (e.g., the index of the initial active UL BWP(s),the index of the default UL BWP(s), and/or the index of the active ULBWP(s)) may be an index of BWP(s) for the PDCCH. Also, the index of theBWP(s) (e.g., the index of the UL BWP(s) (e.g., the index of the initialactive UL BWP(s), the index of the default UL BWP(s), and/or the indexof the active UL BWP(s)) may be an index of BWP(s) for the PUSCH.Namely, the index of the BWP(s) (e.g., the index of the UL BWP(s) (e.g.,the index of the initial active UL BWP(s), the index of the default ULBWP(s), and/or the index of the active UL BWP(s)) may be an index of thePDCCH (e.g., the PDCCH BWP). Also, the index of the BWP(s) (e.g., theindex of the UL BWP(s) (e.g., the index of the initial active UL BWP(s),the index of the default UL BWP(s), and/or the index of the active ULBWP(s)) may be an index of the PUSCH (e.g., the PUSCH BWP).

Here, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information (e.g., first information) used forconfiguring whether the carrier indicator field(s) is present or not inthe DCI format(s) (e.g., the DCI format A, the DCI format C, the DCIformat D and/or the DCI format F). Namely, whether or not the carrierindicator is present in the DCI format(s) may be configured by the gNB106. Namely, the first information may be used for configuring (e.g.,indicating) whether the carrier indicator field is present or not in theDCI format(s). And, the UE 102 may decode (e.g., detect, receive) theDCI format(s) based on the first information.

Also, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information (e.g., second information) used forconfiguring whether the BWP indicator field(s) is present or not in theDCI format(s) (e.g., the DCI format A, the DCI format C, the DCI formatD and/or the DCI format F). Namely, whether or not the BWP indicator ispresent in the DCI format(s) may be configured by the gNB 106. Namely,the second information may be used for configuring (e.g., indicating)whether the BWP indicator field is present or not in the DCI format(s).And, the UE 102 may decode (e.g., detect, receive) the DCI format(s)based on the second information.

Here, the initial active DL BWP(s) may be defined by a location andnumber of contiguous PRBs (i.e., physical resource blocks), a subcarrierspacing, and/or a cyclic prefix, for the control resource set for theType0-PDCCH common search space. Here, the initial active UL BWP(s) maybe linked to (e.g., paired with) the initial active DL BWP(s). Also, thegNB 160 may transmit, by using the PBCH (e.g., MIB), the RMSI (e.g.,SIB2), and/or the RRC message, information used for configuring theinitial active UL BWP(s). Also, the gNB 160 may transmit, by using thePBCH (e.g., MIB), the RMSI (e.g., SIB2), and/or the RRC message,information used for configuring the initial active DL BWP(s). Namely,the UE 102 may determine the initial active DL BWP(s) and/or the initialactive UL BWP(s) based on the information from the gNB 160. For example,the initial active DL BWP(s) and/or the initial active UL BWP(s) may beused for the random access procedure. For example, for operation on theprimary cell, the initial active DL BWP(s) and/or the initial active ULBWP(s) may be used for the random access procedure.

For example, based on an initiation of the random access procedure, in acase that the PRACH resources are configured for the activate UL BWP(s),the UE 102 may perform the random access procedure on the active DLBWP(s) and the activate UL BWP(s). Here, an active DL BWP(s) may belinked to (e.g., paired with) an active UL BWP for which the PRACHresources are configured. Also, based on the initiation of the randomaccess procedure, in a case that the PRACH resources are not configuredfor the active UL BWP, the UE 102 may perform the random accessprocedure on the initial active DL BWP(s) and the initial active ULBWP(s). Namely, for the random access procedure, the UE 102 may switchto the initial active DL BWP(s) and the initial active UL BWP(s). Forexample, in a case that the default BWP(s) (e.g., the default DL BWP(s)and/or the default UL BWP(s)) is not configured and the PRACH resourcesare not configured for the active BWP(s) (e.g., the active DL BWP(s)and/or the active UL BWP(s)), the UE 102 perform the random accessprocedure on the initial active DL BWP(s) and the initial active ULBWP(s).

Also, the gNB 160 may transmit, by using the PBCH (e.g., MIB), the RMSI(e.g., SIB2), and/or the RRC message, information used for configuringthe default DL BWP(s) and/or the default UL BWP(s). Namely, the UE 102may determine the default DL BWP(s) and/or the default UL BWP(s) basedon the information from the gNB 160. Here, the default DL BWP(s) may beconfigured among configured DL BWP(s). Also, the default UL BWP(s) maybe configured among configured UL BWP(s). Also, based on the initiationof the random access procedure, in a case that the default BWP(s) (e.g.,the default DL BWP(s) and/or the default UL BWP(s)) is configured andthe PRACH resources are not configured for the activate BWP(s) (e.g.,the active DL BWP(s) and/or the active UL BWP(s)), the UE 102 mayperform the random access procedure on the default DL BWP(s) and thedefault UL BWP(s). Namely, for the random access procedure, the UE 102may switch to the default DL BWP(s) and the default UL BWP(s).

For example, for serving cell(s), the gNB 160 may transmit, by using thePBCH (e.g., MIB), the RMSI (e.g., SIB2), and/or the RRC message (e.g.,the dedicated RRC message), information used for configuring a set offour DL BWPs (e.g., at most four DL BWPs, a DL BWP set) (e.g., forreceptions by the UE 102). Also, for the serving cell(s), the gNB 160may transmit, by using the PBCH (e.g., MIB), the RMSI (e.g., SIB2),and/or the RRC message (e.g., the dedicated RRC message), informationused for configuring a set of four UL BWP(s) (e.g., at most four ULBWPs, a UL BWP set). For example, for each DL BWP in the set of DL BWPs,the gNB 160 may configure, by using the PBCH (e.g., MIB), the RMSI(e.g., SIB2), and/or the RRC message (e.g., the dedicated RRC message),the subcarrier spacing, the cyclic prefix, a number of contiguous PRBs(e.g., a bandwidth of PRBs), an index (e.g., the index of the DL BWP(s),the DL BWP ID) in the set of DL BWPs. Also, for each UL BWP in the setof UL BWPs, the gNB 160 may configure, by using the PBCH (e.g., MIB),the RMSI (e.g., SIB2), and/or the RRC message (e.g., the dedicated RRCmessage), the subcarrier spacing, the cyclic prefix, a number ofcontiguous PRBs (e.g., a bandwidth of PRBs), an index (e.g., the indexof the UL BWP(s), the UL BWP ID) in the set of UL BWPs. Also, for eachDL BWP or UL BWP in the set of DL BWPs or UL BWPs, respectively, the gNB160 may configure, by using the PBCH (e.g., MIB), the RMSI (e.g., SIB2),and/or the RRC message (e.g., the dedicated RRC message), a link (e.g.,a linking, a pairing, a correspondence, and/or a mapping) between the DLBWP and the UL BWP from the set of configured DL BWP(s) and UL BWP(s).For example, the gNB 160 may configure BWP(s) per serving cell for theuplink (e.g., if the serving cell is configured with the uplink) and forthe downlink.

And, the UE 102 may perform, based on the configuration(s) for the DLBWP(s), reception(s) on the PDCCH in the DL BWP(s) and/or reception(s)on the PDSCH in the DL BWP(s). For example, the UE 102 may perform,based on the configured subcarrier spacing and cyclic prefix (e.g., thecyclic prefix length) for the DL BWP(s), the reception(s) on the PDCCHin the DL BWP(s) and/or the reception(s) on the PDSCH in the DL BWP(s).Also, the UE 102 may perform, based on the configuration(s) for the ULBWP(s), transmission(s) on the PUCCH in the UL BWP(s) and/ortransmission(s) on the PUSCH in the UL BWP(s). For example, the UE 102may perform, based on the configured subcarrier spacing and cyclicprefix (e.g., the cyclic prefix length) for the UL BWP(s), thetransmission(s) on the PUCCH in the UL BWP(s) and/or the transmission(s)on the PUSCH in the UL BWP(s).

Also, the BWP indicator field(s) is configured, as described above, inthe DCI format(s) for the downlink, a value(s) of the BWP indicatorfield(s) may be used for indicating the active DL BWP(s), from theconfigured set of the DL BWP(s), for downlink reception(s) (e.g., thereception(s) on the PDCCH, and/or the reception(s) on the PDSCH). Also,the BWP indicator field(s) is configured, as described above, in the DCIformat(s) for the uplink, a value(s) of the BWP indicator field(s) maybe used for indicating the active UL BWP(s), from the configured set ofthe UL BWP(s), for uplink transmission(s) (e.g., the transmission(s) onthe PUCCH, and/or the transmission(s) on the PUSCH).

FIG. 5 illustrates an example of the downlink and/or uplinktransmissions. As showed by FIG. 5, one or more serving cells may beconfigured to the UE 102. In the carrier aggregation (CA), the gNB 160and the UE 102 may communicate each other using the one more servingcells. Here, the configured one or more serving cells may include oneprimary cell and one or more secondary cell. For example, the primarycell may be a serving cell on which an initial connection establishmentprocedure (e.g., the random access procedure) is performed. Also, theprimary cell may be a serving cell on which a connectionre-establishment procedure is performed. Also, the primary cell may be aserving cell that is indicated as the primary cell (e.g., indicated asthe primary cell during the handover procedure). For example, the gNB160 may transmit, by using the PBCH (e.g., the MIB), the PDSCH (e.g.,the SIB type 2), and/or the RRC message (e.g., the dedicated RRCmessage), information used for configuring the primary cell. Also, thegNB 160 may transmit, by using the PBCH (e.g., the MIB), the PDSCH(e.g., the SIB type 2), and/or the RRC message (e.g., the dedicated RRCmessage), information used for configuring one or more secondary cellsto form together with the primary cell a set of serving cells. Here, inthe downlink, a carrier corresponding to the primary cell may be thedownlink primary component carrier (i.e., the DL PCC), and a carriercorresponding to a secondary cell may be the downlink secondarycomponent carrier (i.e., the DL SCC). Also, in the uplink, a carriercorresponding to the primary cell may be the uplink primary componentcarrier (i.e., the UL PCC), and a carrier corresponding to the secondarycell may be the uplink secondary component carrier (i.e., the UL SCC).

Also, as described above, an activation and/or a deactivation mechanismof the serving cell(s) may be supported. Here, the primary cell may bealways activated. For example, the gNB 160 may transmit, e.g., by usingthe higher layer signal (e.g., the MAC CE) and/or the DCI format(s),information used for indicating the activation, the deactivation, and/orthe switching of the one or more serving cells. Also, the gNB 160 maytransmit, e.g., by using the higher layer signal (e.g., the RRCmessage), information used for configuring a value(s) of timer (e.g., afirst timer) associated with the deactivation and/or the switching ofthe one or more serving cells. For example, the UE 102 may maintain thefirst timer per configured secondary cell. Also, the UE 102 maydeactivate the secondary cell (i.e., the associated secondary cell)based on the timer expiry. Namely, the UE 102 may activate, based on theinformation used for indicating the activation and/or the switching ofthe serving cell(s) (e.g., the secondary cell(s)), the serving cell(s)(e.g., the secondary cell(s)).

And, in a case that the serving cell(s) is activated, the UE 102 mayperform the SRS transmission (e.g., the aperiodic SRS transmission) onthe serving cell(s). Also, in a case that the serving cell(s) isactivated, the UE 102 may perform CSI reporting (e.g., the aperiodic CSIreporting) for the serving cell(s). Also, in a case that the servingcell(s) is activated, the UE 102 may perform the PDCCH monitoring on theserving cell(s). Also, in a case that the serving cell(s) is activated,the UE 102 may perform the PDCCH monitoring for the serving cell(s).Also, in a case that the serving cell(s) is activated, the UE 102 maystart (or restart) the first timer associated with the serving cell(s).Also, the UE 102 may deactivate, based on the information used fordeactivating the serving cell(s) (e.g., the secondary cell(s)), theserving cell(s) (e.g., the secondary cell(s)).

Also, in a case that the serving cell(s) is deactivated, the UE 102 maynot perform the CSI reporting (e.g., the aperiodic CSI reporting) forthe serving cell(s). Also, in a case that the serving cell(s) isdeactivated, the UE 102 may not transmit UL-SCH on the serving cell(s).Also, in a case that the serving cell(s) is deactivated, the UE 102 maynot monitor the PDCCH on the serving cell(s). Also, in a case that theserving cell(s) is deactivated, the UE 102 may not monitor the PDCCH forthe serving cell(s).

Also, for example, one or more BWPs (e.g., at most four DL BWPs and/orat most four UL BWPs) may be configured to the UE 102. Here, theconfigured one or more serving cells may include one or more initialactive BWPs (e.g., the initial active DL BWPs, and/or the initial activeUL BWPs). Also, the configured one or more serving sells may include oneor more default BWPs (e.g., the default DL BWPs, and/or the default ULBWPs). Also, the configured one or more serving sells may include one ormore active BWPs (e.g., the active DL BWPs, and/or the active UL BWPs).For example, the initial active BWP(s) may be a BWP(s) (e.g., the DLBWP(s) and/or the UL BWP(s)) on which the initial connectionestablishment procedure (e.g., the random access procedure, as describedabove) is performed. Also, the initial active BWP(s) may be a BWP (e.g.,the DL BWP(s) and/or the UL BWP(s)) on which the connectionre-establishment procedure is performed. Also, the initial active BWP(s)may be a BWP (e.g., the DL BWP(s) and/or the UL BWP(s)) that isindicated as the initial active BWP (e.g., indicated as the initialactive BWP(s) during the handover procedure). Namely, the gNB 160 maytransmit a handover command including information used for indicatingthe initial active BWP(s) (e.g., the initial active DL BWP(s) and/or theinitial active UL BWP(s)).

Also, for example, the default BWP(s) may be a BWP(s) (e.g., the DLBWP(s) and/or the UL BWP(s)) on which the initial connectionestablishment procedure (e.g., the random access procedure, as describedabove) is performed. Also, the default BWP(s) may be a BWP(s) (e.g., theDL BWP(s) and/or the UL BWP(s)) on which the connection re-establishmentprocedure is performed. Also, the default BWP(s) may be a BWP(s) (e.g.,the DL BWP(s) and/or the UL BWP(s)) that is indicated as the defaultBWP(s) (e.g., indicated as the default BWP(s) during the handoverprocedure). Namely, the gNB 160 may transmit the handover commandincluding information used for indicating the default BWP(s) (e.g., thedefault DL BWP(s) and/or the default UL BWP(s)).

Here, as described above, the gNB 160 may independently configure theinitial active DL BWP(s) and the initial active UL BWP(s). Also, the gNB160 may independently configure the default DL BWP(s) and the default ULBWP(s). Also, the gNB 160 may independently configure, in the servingcell, the one or more DL BWPs (e.g., at most four DL BWPs) and the oneor more UL BWPs (e.g., at most four UL BWPs).

Also, as described above, the link (i.e., the linking, the pairing,and/or the correspondence) may be defined between the UL BWP(s) and theDL BWP(s). Namely, a BWP(s) in which the transmission on the PDSCH isperformed based on the scheduling by using the DCI format(s) (i.e., theDCI format(s) for the downlink (i.e., the downlink assignment)) may beidentified based on the link. Also, a BWP(s) in which the transmissionon the PUSCH is performed based on the scheduling by using the DCIformat(s) (i.e., the DCI format(s) for the uplink (i.e., the uplinkgrant)) may be identified based on the link.

Here, an activation, a deactivation, and/or a switching mechanism of theBWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)) may be supported. Forexample, the activation, the deactivation, and/or the switching of theBWP(s) may be controlled (e.g., configured, and/or indicated) by usingthe higher layer signal (e.g., the RRC message (e.g., the dedicated RRCmessage), and/or the MAC CE) and/or the DCI format(s) (e.g., the PDCCHindicating the downlink assignment, and/or the PDCCH indicating theuplink grant). For example, the gNB 160 may transmit, e.g., by using thehigher layer signal and/or the DCI format(s), information used forindicating the activation, the deactivation, and/or the switching of theBWP(s). Namely, the gNB 160 may transmit, e.g., by using the higherlayer signal and/or the DCI format(s), information used for indicatingthe activation of the BWP(s). And, the UE 102 may activate the BWP(s)based on the information used for indicating the activation of theBWP(s). Also, the gNB 160 may transmit, e.g., by using the higher layersignal and/or the DCI format(s), information used for indicating thedeactivation of the BWP(s). And, the UE 102 may deactivate the BWP(s)based on the information used for indicating the deactivation of theBWP(s). Also, the gNB 160 may transmit, e.g., by using the higher layersignal and/or the DCI format(s), information used for indicating theswitching of the BWP(s). And, the UE 102 may switch the BWP(s) based onthe information used for indicating the switching of the BWP(s). Here,for example, the switching of the BWP(s) (e.g., the switching of theBWP(s) for the serving cell(s)) may be used for activating an in activeBWP(s) and deactivating BWP(s) at a time.

Here, the initial active BWP(s) (e.g., the initial activate DL BWP(s)and/or the initial active UL BWP(s)) may be always activated. Also, ifthe default BWP(s) (e.g., the default DL BWP(s) and/or the default ULBWP(s)) is configured, the default BWP may be always activated. Namely,the initial active BWP(s) and/or the default BWP(s) may be activewithout the information used for indicating the activation, thedeactivation, and/or the switching of the BWP(s). Also, as describedabove, a serving cell may be configured with at most four BWP(s) (e.g.,at most four DL BWP(s) and/or at most four UL BWP(s)), and for anactivated serving cell, there may always one active BWP (e.g., oneactive DL BWP and/or one active UL BWP) at any point in time.

Here, the gNB 160 may transmit, by using the higher layer signal (e.g.,the RRC message), information used for configuring a value(s) of timer(e.g., a second timer) associated with the deactivation and/or theswitching of the BWP(s). For example, the UE 102 may maintain the secondtimer per configured serving cell(s). Also, the UE 102 may maintain thesecond timer per configured BWP(s).

Here, in a case that the BWP(s) is activated (i.e., on the active BWP(s)for each activated serving cell configured with the BWP(s) (e.g., theBWP operation)), the UE 102 may perform transmission on the UL-SCH(i.e., transmission on the UL-SCH on the BWP(s)). Also, in a case thatthe BWP(s) is activated, the UE 102 may perform transmission on RACH(i.e., transmission on the RACH on the BWP(s)). Also, in a case that theBWP(s) is activated, the UE 102 may monitor the PDCCH (i.e., perform thePDCCH monitoring on the BWP(s). Also, in a case that the BWP(s) isactivated, the UE 102 may perform transmission on the PUCCH (i.e.,transmission on the PUCCH on the BWP(s)). Also, in a case that theBWP(s) is activated, the UE 102 may perform reception on the DL-SCH(i.e., reception on the DL-SCH on the BWP(s)). Also, in a case that theBWP(s) is activated, the UE 102 may start (or restart) the second timerassociated with the BWP(s).

Also, in a case that the BWP(s) is deactivated (i.e., on the inactiveBWP(s) for each activated serving cell configured with the BWP(s) (e.g.,the BWP operation)), the UE 102 may not perform transmission on theUL-SCH (i.e., transmission on the UL-SCH on the BWP(s)). Also, in a casethat the BWP(s) is deactivated, the UE 102 may not perform transmissionon RACH (i.e., transmission on the RACH on the BWP(s)). Also, in a casethat the BWP(s) is deactivated, the UE 102 may not monitor the PDCCH(i.e., perform the PDCCH monitoring on the BWP(s). Also, in a case thatthe BWP(s) is deactivated, the UE 102 may not perform transmission onthe PUCCH (i.e., transmission on the PUCCH on the BWP(s)). Also, in acase that the BWP(s) is deactivated, the UE 102 may not performreception on the DL-SCH (i.e., reception on the DL-SCH on the BWP(s)).Also, in a case that the BWP(s) is deactivated, the UE 102 may clear (orstop) the second timer associated with the BWP(s).

FIG. 6 illustrates another example of the downlink and/or uplinktransmissions. Here, as described above, the gNB 160 may transmit, byusing the PBCH (e.g., the MIB), the PDSCH (e.g., the SIB type 2), and/orthe RRC message (e.g., the dedicated RRC message), information used forspecifying (e.g., configuring) configuration(s) in a case that theBWP(s) operation is used in the serving cell(s) (e.g., in a case thatthe BWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)) is configured forthe serving cell(s)). Also, for example, as described above, the gNB 160may transmit, by using the PBCH (e.g., the MIB), the PDSCH (e.g., theSIB type 2), and/or the RRC message (e.g., the dedicated RRC message),second information used for configuring whether the BWP indicatorfield(s) is present or not in the DCI format(s).

Also, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information (e.g., third information) used forconfiguring an index of the scheduled BWP(s) (e.g., the index of theBWP(s) (e.g., the index of the DL BWP(s) and/or the index of the ULBWP(s)). Here, the third information may be used for indicating thatwhich BWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)) is scheduled byusing the DCI format(s) for the downlink (i.e., the downlinkassignment(s)) and/or the DCI format(s) for the uplink (i.e., the uplinkgrant(s)), for the concerned BWP(s). Namely, the third information maybe used for indicating the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) (e.g., the DL BWP(s) scheduled by using the DCI format(s) forthe downlink, and/or the UL BWP(s) scheduled by using the DCI format(s)for the uplink). And, the DCI format(s) for the downlink in the other DLBWP(s) may be used for scheduling of the PDSCH in the BWP(s) indicatedby the third information. Namely, the PDSCH in the BWP(s) indicated bythe third information, may be scheduled by using the DCI format(s) forthe downlink in the other DL BWP. Also, the DCI format(s) for the uplinkin the other DL BWP(s) may be used for scheduling of the PUSCH in theBWP(s) indicated by the third information. Namely, the PUSCH in theBWP(s) indicated by the third information, may be scheduled by using theDCI format(s) for the uplink in the other DL BWP. Namely, the scheduledBWP(s) may be corresponding to the BWP(s) in which the PDSCH and/or thePUSCH is scheduled. Also, the scheduling BWP(s) may be corresponding tothe BWP(s) scheduling the PDSCH and/or the PUSCH (e.g., the BWP(s) inwhich the DCI format(s) for the downlink and/or the DCI format(s) forthe uplink is transmitted).

Here, a mapping (e.g., a link (e.g., linking, a pairing, acorrespondence)) of the scheduled BWP(s) and the scheduling BWP(s) maybe many-to-one mapping (e.g., or many-to-may mapping). Namely, one ormore scheduled BWPs (e.g., one or more indices of the BWPs (e.g., one ormore indices of the DL BWPs, and/or one or more indices of the UL BWPs))may be configured for one scheduling BWP (e.g., or one or morescheduling BWPs).

Also, a mapping (e.g., a link (e.g., linking, a pairing, acorrespondence)) of the scheduled BWP(s) and the scheduling BWP(s) maybe one-to-one mapping (e.g., or one-to-many mapping). Namely, onescheduled BWP (e.g., one index of the BWP (e.g., one index of the DLBWP, and/or one index of the UL BWP)) may be configured for onescheduling BWP (e.g., or one or more scheduling BWPs). Namely, multiplescheduled BWPs (e.g., multiple indices of the scheduling BWPs) may notbe configured for one scheduling BWP (e.g., or one or more schedulingBWPs).

Here, the index of the scheduled BWP may be configured by using theindex of the BWP(s). As described above, if the default BWP(s) (e.g.,the default DL BWP(s) and/or the default UL BWP(s)) is not configured,the index of the initial active BWP(s) (e.g., the index of the initialactive DL BWP(s) and/or the initial active UL BWP(s)) may be “0”. Also,if the default BWP(s) (e.g., the default DL BWP(s) and/or the default ULBWP(s)) is configured, the index of the default BWP(s) (e.g., the indexof the default DL BWP(s) and/or the default UL BWP(s)) may be “0”. Also,the index of the secondary BWP(s) (e.g., the secondary DL BWP(s) and/orthe secondary UL BWP(s)) may be corresponding to the index of the BWP(s)(e.g., the index of the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) configured by the gNB 160). Also, the mapping between thescheduled BWP(s) and the scheduling BWP(s) may be depend on thesubcarrier spacing. For example, the mapping between the scheduledBWP(s) and the scheduling BWP(s) may be applied for only the samesubcarrier spacing. Namely, the scheduled BWP(s) with a subcarrierspacing “A” may be mapped to only the scheduling BWP(s) with thesubcarrier spacing “A”. Also, the multiple scheduled BWPs may be BWPswith the same subcarrier spacing “A”.

Here, the value(s) of the BWP indicator field(s) may be determined basedon the number of the scheduled BWP(s) (e.g., the number of acandidate(s) of the scheduled BWP(s), the number of the BWP(s) that ispossible to be scheduled). For example, the UE 102 may determine thenumber of the scheduled BWP(s) based on the third information. Also, thegNB 160 may transmit, by using the PBCH (e.g., the MIB), the PDSCH(e.g., the SIB type 2), and/or the RRC message (e.g., the dedicated RRCmessage), information (e.g., fourth information) used for configuringthe number of the scheduled BWP(s).

Also, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information (e.g., fifth information) used forconfiguring a mapping (e.g., a link (e.g., a linking, a pairing, and/ora correspondence)) between the value(s) of the BWP indicator field(s)and the index of the scheduled BWP(s) (e.g., the index of the DL BWP(s)and/or the index of the UL BWP(s)). Here, the mapping between thevalue(s) of the BWP indicator field(s) and the index of the scheduledBWP(s) may be specified, in advance, by the specification, and knowninformation between the gNB 160 and the UE 102.

For example, the gNB 160 may configure, as the mapping between thevalue(s) of the BWP indicator field(s) (e.g., 1-bit BWP indicatorfield(s)) and the index of the scheduled BWP(s), the value(s) “0” (e.g.,“00”) and the index of the BWP “2”. Also, the gNB 160 may configure, asthe mapping between the value(s) of the BWP indicator field(s) (e.g.,1-bit BWP indicator field(s)) and the index of the scheduled BWP(s), thevalue(s) “1” and the index of the BWP “1” (e.g., “01”). Also, the gNB160 may configure, as the mapping between the value(s) of the BWPindicator field(s) (e.g., 2-bit BWP indicator field(s)) and the index ofthe scheduled BWP(s), the value(s) “00” and the index of the BWP “1”(e.g., “01”). Also, the gNB 160 may configure, as the mapping betweenthe value(s) of the BWP indicator field(s) (e.g., 2-bit BWP indicatorfield(s)) and the index of the scheduled BWP(s), the value(s) “01” andthe index of the BWP “2” (e.g., “10”). Also, the gNB 160 may configure,as the mapping between the value(s) of the BWP indicator field(s) (e.g.,2-bit BWP indicator field(s)) and the index of the scheduled BWP(s), thevalue(s) “10” and the index of the BWP “0” (e.g., “00”). Also, the gNB160 may configure, as the mapping between the value(s) of the BWPindicator field(s) (e.g., 2-bit BWP indicator field(s)) and the index ofthe scheduled BWP(s), the value(s) “11” and the index of the BWP “3”(e.g., “11”).

Here, for example, in a case that the self-BWP scheduling (i.e., thePUSCH in a certain BWP (e.g., the index of the BWP is c) is scheduled byusing the DCI format(s) for the uplink in the certain BWP (e.g., theindex of the BWP is c)), the value of “0” (e.g., for 1-bit BWP indicatorfield(s)) and/or “00” (e.g., for 2-bit BWP indicator field(s)) may beused (e.g., specified, defined, configured).

Also, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information (e.g., sixth information) used forconfiguring an index of the scheduling BWP(s) (e.g., the index of theBWP(s) (e.g., the index of the DL BWP(s)). Here, the sixth informationmay be used for indicating that which BWP(s) (e.g., the DL BWP(s))signals the DCI format(s) for the downlink (i.e., the downlinkassignment(s)) and/or the DCI format(s) for the uplink (i.e., the uplinkgrant(s)), for the concerned BWP(s). Namely, the sixth information maybe used for indicating the BWP (e.g., the DL BWP(s)) (e.g., the BWP(s)in which the DCI format(s) for the downlink is transmitted). And, theDCI format(s) for the downlink transmitted in the DL BWP(s) indicated bythe sixth information, may be used for scheduling of the PDSCH in theother BWP(s) (e.g., the BWP(s) in which the PDSCH is scheduled). Also,the sixth information may be used for indicating the BWP(s) (e.g., theDL BWP(s)) (e.g., the BWP(s) in which the DCI format(s) for the uplinkis transmitted). And, the DCI format(s) for the uplink transmitted inthe BWP(s) indicated by the sixth information, may be used forscheduling of the PUSCH in the other BWP(s) (e.g., the BWP(s) in whichthe PUSCH is scheduled).

Here, a mapping (e.g., a link (e.g., linking, a pairing, acorrespondence)) of the scheduling BWP(s) and the scheduled BWP(s) maybe many-to-one mapping (e.g., or many-to-many mapping). Namely, one ormore scheduling BWPs (e.g., one or more indices of the BWPs (e.g., oneor more indices of the DL BWPs)) may be configured for one scheduled BWP(e.g., or one or more scheduled BWPs).

Here, a mapping (e.g., a link (e.g., linking, a pairing, acorrespondence)) of the scheduling BWP(s) and the scheduled BWP(s) maybe one-to-one mapping (e.g., or one-to-many mapping). Namely, onescheduling BWP (e.g., one index of the BWP (e.g., one index of the DLBWP)) may be configured for one scheduled BWP (e.g., one or morescheduled BWPs). Namely, multiple scheduling BWPs (e.g., multipleindices of the scheduling BWPs) may not be configured for one scheduledBWP (e.g., or multiple scheduled BWPs).

Also, the index of the scheduling BWP may be configured by using theindex of the BWP(s). As described above, if the default BWP(s) (e.g.,the default DL BWP(s) and/or the default UL BWP(s)) is not configured,the index of the initial active BWP(s) (e.g., the index of the initialactive DL BWP(s) and/or the initial active UL BWP(s)) may be “0”. Also,if the default BWP(s) (e.g., the default DL BWP(s) and/or the default ULBWP(s)) is configured, the index of the default BWP(s) (e.g., the indexof the default DL BWP(s) and/or the default UL BWP(s)) may be “0”. Also,the index of the secondary BWP(s) (e.g., the secondary DL BWP(s) and/orthe secondary UL BWP(s)) may be corresponding to the index of the BWP(s)(e.g., the index of the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) configured by the gNB 160). Also, the mapping of the schedulingBWP(s) and the scheduled BWP(s) may depend on the subcarrier spacing.For example, the mapping of the scheduling BWP(s) and the scheduledBWP(s) may be applied for only the same subcarrier spacing. For example,the scheduling BWP(s) with a subcarrier spacing “A” may be mapped toonly the scheduled BWP(s) with the subcarrier spacing “A”. Also, themultiple scheduling BWPs may be BWPs with the same subcarrier spacing“A”.

Here, the value(s) of the BWP indicator field(s) may be determined basedon the number of the scheduling BWP(s) (e.g., the number of acandidate(s) of the scheduling BWP(s), the number of the schedulingBWP(s) that is possible to be used). For example, the UE 102 maydetermine the number of the scheduled BWP(s) based on the sixthinformation. Also, the gNB 160 may transmit, by using the PBCH (e.g.,the MIB), the PDSCH (e.g., the SIB type 2), and/or the RRC message(e.g., the dedicated RRC message), information (e.g., seventhinformation) used for configuring the number of the scheduling BWP(s).

Also, the gNB 160 may transmit, by using the PBCH (e.g., the MIB), thePDSCH (e.g., the SIB type 2), and/or the RRC message (e.g., thededicated RRC message), information (e.g., eighth information) used forconfiguring a mapping (e.g., a link (e.g., a linking, a pairing, and/ora correspondence)) between the value(s) of the BWP indicator field(s)and the index of the scheduling BWP(s) (e.g., the index of the DL BWP(s)and/or the index of the UL BWP(s)). Here, the mapping between thevalue(s) of the BWP indicator field(s) and the index of the scheduledBWP(s) may be specified, in advance, by the specification, and knowninformation between the gNB 160 and the UE 102.

FIG. 7 illustrates various components that may be utilized in a UE 702.The UE 702 described in connection with FIG. 7 may be implemented inaccordance with the UE 102 described in connection with FIG. 1. The UE702 includes a processor 703 that controls operation of the UE 702. Theprocessor 703 may also be referred to as a central processing unit(CPU). Memory 705, which may include read-only memory (ROM), randomaccess memory (RAM), a combination of the two or any type of device thatmay store information, provides instructions 707 a and data 709 a to theprocessor 703. A portion of the memory 705 may also include non-volatilerandom access memory (NVRAM). Instructions 707 b and data 709 b may alsoreside in the processor 703. Instructions 707 b and/or data 709 b loadedinto the processor 703 may also include instructions 707 a and/or data709 a from memory 705 that were loaded for execution or processing bythe processor 703. The instructions 707 b may be executed by theprocessor 703 to implement the methods described above.

The UE 702 may also include a housing that contains one or moretransmitters 758 and one or more receivers 720 to allow transmission andreception of data. The transmitter(s) 758 and receiver(s) 720 may becombined into one or more transceivers 718. One or more antennas 722 a-nare attached to the housing and electrically coupled to the transceiver718.

The various components of the UE 702 are coupled together by a bussystem 711, which may include a power bus, a control signal bus and astatus signal bus, in addition to a data bus. However, for the sake ofclarity, the various buses are illustrated in FIG. 7 as the bus system711. The UE 702 may also include a digital signal processor (DSP) 713for use in processing signals. The UE 702 may also include acommunications interface 715 that provides user access to the functionsof the UE 702. The UE 702 illustrated in FIG. 7 is a functional blockdiagram rather than a listing of specific components.

FIG. 8 illustrates various components that may be utilized in a gNB 860.The gNB 860 described in connection with FIG. 8 may be implemented inaccordance with the gNB 160 described in connection with FIG. 1. The gNB860 includes a processor 803 that controls operation of the gNB 860. Theprocessor 803 may also be referred to as a central processing unit(CPU). Memory 805, which may include read-only memory (ROM), randomaccess memory (RAM), a combination of the two or any type of device thatmay store information, provides instructions 807 a and data 809 a to theprocessor 803. A portion of the memory 805 may also include non-volatilerandom access memory (NVRAM). Instructions 807 b and data 809 b may alsoreside in the processor 803. Instructions 807 b and/or data 809 b loadedinto the processor 803 may also include instructions 807 a and/or data809 a from memory 805 that were loaded for execution or processing bythe processor 803. The instructions 807 b may be executed by theprocessor 803 to implement the methods described above.

The gNB 860 may also include a housing that contains one or moretransmitters 817 and one or more receivers 878 to allow transmission andreception of data. The transmitter(s) 817 and receiver(s) 878 may becombined into one or more transceivers 876. One or more antennas 880 a-nare attached to the housing and electrically coupled to the transceiver876.

The various components of the gNB 860 are coupled together by a bussystem 811, which may include a power bus, a control signal bus and astatus signal bus, in addition to a data bus. However, for the sake ofclarity, the various buses are illustrated in FIG. 8 as the bus system811. The gNB 860 may also include a digital signal processor (DSP) 813for use in processing signals. The gNB 860 may also include acommunications interface 815 that provides user access to the functionsof the gNB 860. The gNB 860 illustrated in FIG. 8 is a functional blockdiagram rather than a listing of specific components.

FIG. 9 is a block diagram illustrating one implementation of a UE 902 inwhich systems and methods for downlink and/or uplink (re)transmissionsmay be implemented. The UE 902 includes transmit means 958, receivemeans 920 and control means 924. The transmit means 958, receive means920 and control means 924 may be configured to perform one or more ofthe functions described in connection with FIG. 1 above. FIG. 7 aboveillustrates one example of a concrete apparatus structure of FIG. 9.Other various structures may be implemented to realize one or more ofthe functions of FIG. 1. For example, a DSP may be realized by software.

FIG. 10 is a block diagram illustrating one implementation of a gNB 1060in which systems and methods for downlink and/or uplink(re)transmissions may be implemented. The gNB 1060 includes transmitmeans 1017, receive means 1078 and control means 1082. The transmitmeans 1017, receive means 1078 and control means 1082 may be configuredto perform one or more of the functions described in connection withFIG. 1 above. FIG. 8 above illustrates one example of a concreteapparatus structure of FIG. 10. Other various structures may beimplemented to realize one or more of the functions of FIG. 1. Forexample, a DSP may be realized by software.

FIG. 11 is a block diagram illustrating one implementation of an gNB1160. The gNB 1160 may include a higher layer processor 1123, a DLtransmitter 1125, a UL receiver 1133, and one or more antenna 1131. TheDL transmitter 1125 may include a PDCCH transmitter 1127 and a PDSCHtransmitter 1129. The UL receiver 1133 may include a PUCCH receiver 1135and a PUSCH receiver 1137.

The higher layer processor 1123 may manage physical layer's behaviors(the DL transmitter's and the UL receiver's behaviors) and providehigher layer parameters to the physical layer. The higher layerprocessor 1123 may obtain transport blocks from the physical layer. Thehigher layer processor 1123 may send/acquire higher layer messages suchas an RRC message and MAC message to/from a UE's higher layer. Thehigher layer processor 1123 may provide the PDSCH transmitter transportblocks and provide the PDCCH transmitter transmission parameters relatedto the transport blocks.

The DL transmitter 1125 may multiplex downlink physical channels anddownlink physical signals (including reservation signal) and transmitthem via transmission antennas 1131. The UL receiver 1133 may receivemultiplexed uplink physical channels and uplink physical signals viareceiving antennas 1131 and de-multiplex them. The PUCCH receiver 1135may provide the higher layer processor 1123 UCI. The PUSCH receiver 1137may provide the higher layer processor 1123 received transport blocks.

FIG. 12 is a block diagram illustrating one implementation of a UE 1202.The UE 1202 may include a higher layer processor 1223, a UL transmitter1251, a DL receiver 1243, and one or more antenna 1231. The ULtransmitter 1251 may include a PUCCH transmitter 1253 and a PUSCHtransmitter 1255. The DL receiver 1243 may include a PDCCH receiver 1245and a PDSCH receiver 1247.

The higher layer processor 1223 may manage physical layer's behaviors(the UL transmitter's and the DL receiver's behaviors) and providehigher layer parameters to the physical layer. The higher layerprocessor 1223 may obtain transport blocks from the physical layer. Thehigher layer processor 1223 may send/acquire higher layer messages suchas an RRC message and MAC message to/from a UE's higher layer. Thehigher layer processor 1223 may provide the PUSCH transmitter transportblocks and provide the PUCCH transmitter 1253 UCI.

The DL receiver 1243 may receive multiplexed downlink physical channelsand downlink physical signals via receiving antennas 1231 andde-multiplex them. The PDCCH receiver 1245 may provide the higher layerprocessor 1223 DCI. The PDSCH receiver 1247 may provide the higher layerprocessor 1223 received transport blocks.

FIG. 13 illustrates an example of setting(s) for CSI reporting. Asdescribed as FIG. 13, the UE 102 may report the CSI (e.g., aperiodicCSI, semi-persistent CSI, and/or periodic CSI) based on setting(s)(i.e., configuration(s)) by the gNB 160. Namely, the gNB 160 maytransmit, by using the RRC message (e.g., the dedicated RRC message),information used for configuring the setting(s) for the CSI reporting.Also, the UE 102 may perform, based on the information used configuringthe setting(s) for the CSI reporting, the CSI reporting. Namely, the UE102 may perform the CSI reporting based on configuration(s) (e.g.,configuration(s) by the RRC message (i.e., the higher layer signal),RRC-configured parameter(s), higher layer-configured parameter(s)).Here, the setting(s) may be associated with the DL BWP(s) (e.g., asingle DL BWP). Namely, the CSI report(s) (i.e., the CSI report(s)transmitted at a certain timing) may be associated with the DL BWP(s)(e.g., a single DL BWP).

Here, as described above, in a case that the serving cell(s) isactivated, the UE 102 may perform the SRS transmission (e.g., theaperiodic SRS transmission) on the serving cell(s). Also, in a case thatthe serving cell(s) is activated, the UE 102 may perform the CSIreporting for the serving cell(s). Here, as described above, the UE 102may perform the CSI reporting associated with the DL BWP(s) (e.g., thesingle DL BWP) configured for the serving cell(s). Also, in a case thatthe serving cell(s) is activated, the UE 102 may perform the PDCCHmonitoring on the serving cell(s). Also, in a case that the servingcell(s) is activated, the UE 102 may perform the PDCCH monitoring forthe serving cell(s). Also, in a case that the serving cell(s) isactivated, the UE 102 may start (or restart) the first timer associatedwith the serving cell(s). Also, the UE 102 may deactivate, based on theinformation used for deactivating the serving cell(s) (e.g., thesecondary cell(s)), the serving cell(s) (e.g., the secondary cell(s)).And, in a case that the serving cell(s) is deactivated, the UE 102 mayclear (e.g., stop) the first timer associated with the serving cell(s).Also, in a case that the DCI format(s) on the activated serving cell(s)is used for scheduling of the PDSCH and/or the PUSCH, the UE 102 mayrestart the first timer associated with the serving cell(s). Also, in acase that the DCI format(s) on the serving cell(s) scheduling theactivated serving cell(s) is used for scheduling of the PDSCH and/or thePUSCH for the activated serving cell(s), the UE 102 may restart thefirst timer associated with the serving cell(s). Also, in a case thatthe serving cell(s) is deactivated, the UE 102 may not perform the SRStransmission (e.g., the aperiodic SRS transmission) on the servingcell(s). Also, in a case that the serving cell(s) is deactivated, the UE102 may not perform the CSI reporting (e.g., the aperiodic CSIreporting) for the serving cell(s). Also, in a case that the servingcell(s) is deactivated, the UE 102 may not transmit UL-SCH on theserving cell(s). Also, in a case that the serving cell(s) isdeactivated, the UE 102 may not monitor the PDCCH on the servingcell(s). Also, in a case that the serving cell(s) is deactivated, the UE102 may not monitor the PDCCH for the serving cell(s).

Here, in a case that the serving cell(s) is deactivated, the UE 102 maysuspend (e.g., interrupt, store) the setting(s) for the CSI reporting.Here, as described above, the DL BWP(s) (e.g., the single DL BWP) in theserving cell(s) may be associated with the setting(s) for the CSIreporting and/or the CSI reporting. Also, the UL BWP(s) (e.g., thesingle UL BWP linked to the single DL BWP associated with the setting(s)for the CSI reporting and/or the CSI reporting) in the serving cell(s)may be associated with the setting(s) for the CSI reporting and/or theCSI reporting. Namely, in a case that the serving cell(s) configured(e.g., and/or activated) with the DL BWP(s) is deactivated, the UE 102may suspend the setting(s) for the CSI reporting associated with the DLBWP(s) configured for the serving cell(s) (i.e., the deactivated servingcell(s)). Namely, in a case that the serving cell(s) for which the DLBWP(s) is configured (e.g., and/or activated) is deactivated, the UE 102may suspend the setting(s) for the CSI reporting associated with the DLBWP(s) configured for the serving cell(s) (i.e., the deactivated servingcell(s)).

For example, in a case that the serving cell(s) is deactivated, the UE102 may suspend the setting(s) for the CSI reporting associated with theserving cell(s) (i.e., the deactivated serving cell(s)) (e.g., thedeactivated secondary cell(s)). For example, in a case that two DL BWPsare configured (e.g., and/or activated) for the serving cell(s) and eachsetting for the CSI reporting is configured for each DL BWP, if theserving cell(s) is deactivated, each setting may be suspended. Forexample, in a case that first timer associated with the serving cell(s)(i.e., the activated serving cell(s) (e.g., the activated secondarycell(s)) expires, the UE 102 may deactivate the serving cell(s) andsuspend the setting(s) for the CSI reporting associated with the servingcell(s) (i.e., the deactivated serving cell(s)) (e.g., the deactivatedsecondary cell(s)).

Also, in a case that the serving cell(s) is activated, the UE 102 may(re-)initialize (e.g., (re-)start, resume, proceed with, continue) thesetting(s) for the CSI reporting. Namely, in a case that the servingcell(s) configured (e.g., and/or activated) with the DL BWP(s) isactivated, the UE 102 may (re-)initialize the setting(s) for the CSIreporting associated with the DL BWP(s) configured for the servingcell(s) (i.e., the activated serving cell(s)). Namely, in a case thatthe serving cell(s) for which the DL BWP(s) is configured (e.g., and/oractivated) is activated, the UE 102 may (re-)initialize the setting(s)for the CSI reporting associated with the DL BWP(s) configured for theserving cell(s) (i.e., the activated serving cell(s)).

Namely, in a case that the serving cell(s) is activated, the UE 102 may(re-)initialize the setting(s) for the CSI reporting associated with theserving cell(s) (i.e., the activated serving cell(s)) (e.g., theactivated secondary cell(s)). For example, in a case that the servingcell(s) is configured and two DL BWPs are configured (e.g., and/oractivated) for the serving cell(s), if the serving cell(s) (e.g., theserving cell(s) configured with the two DL BWPs, the serving cell(s) forwhich the two DL BWPs are configured) is activated, each setting may be(re-)initialize. For example, in a case that the serving cell(s) (e.g.,the secondary cell) is activated, the UE 102 may start the first timerassociated with the serving cell(s) (e.g., the activated servingcell(s)) and (re-)initialize the setting(s) for the CSI reportingassociated with the serving cell(s) (e.g., the activated servingcell(s)). Namely, in a case that the serving cell(s) (e.g., thesecondary cell(s)) is activated, the UE 102 may (re-)initialize thesuspended setting(s) associated with the serving cell(s) (i.e., theactivated serving cell(s)) (e.g., the activated secondary cell(s)). Forexample, in a case that the serving cell(s) (e.g., the secondarycell(s)) is activated, the UE 102 may (re-)initialize, based on thestored setting(s) (e.g., based on the stored setting(s) associated withthe serving cell(s)), the suspended setting(s) associated with theserving cell(s) (e.g., the secondary cell(s)). Namely, in a case thatthe serving cell(s) (e.g., the secondary cell(s)) is activated, the UE102 may (re-)initialize, based on the stored configuration(s) (e.g.,based on the stored configurations(s) associated with the servingcell(s)), the suspended setting(s) associated with the serving cell(s)(e.g., the secondary cell(s)).

Alternatively, in a case that the serving cell(s) is deactivated, the UE102 may clear (e.g., stop) the setting(s) for the CSI reporting. Namely,in a case that the serving cell(s) configured (e.g., and/or activated)with the DL BWP(s) is deactivated, the UE 102 may clear the setting(s)for the CSI reporting associated with the DL BWP(s) configured for theserving cell(s) (i.e., the deactivated serving cell(s)). Namely, in acase that the serving cell(s) for which the DL BWP(s) is configured(e.g., and/or activated) is deactivated, the UE 102 may clear thesetting(s) for the CSI reporting associated with the DL BWP(s)configured for the serving cell(s) (i.e., the deactivated servingcell(s)).

For example, in a case that the serving cell(s) is deactivated, the UE102 may clear the setting(s) for the CSI reporting associated with theserving cell(s) (i.e., the deactivated serving cell(s)) (e.g., thedeactivated secondary cell(s)). For example, in a case that two DL BWPsare configured (e.g., and/or activated) for the serving cell(s) and eachsetting for the CSI reporting is configured for each DL BWP, if theserving cell(s) (e.g., the serving cell(s) configured with the two DLBWPs, the serving cell(s) for which the two DL BWPs are configured) isdeactivated, each setting may be cleared. For example, in a case thatfirst timer associated with the serving cell(s) (i.e., the activatedserving cell(s) (e.g., the activated secondary cell(s)) expires, the UE102 may deactivate the serving cell(s) and clear the setting(s) for theCSI reporting associated with the serving cell(s) (i.e., the deactivatedserving cell(s)) (e.g., the deactivated secondary cell(s)).

Also, as described above, in a case that the BWP(s) is activated (i.e.,on the active BWP(s) for each activated serving cell configured with theBWP(s) (e.g., the BWP operation)), the UE 102 may perform transmissionon the UL-SCH (i.e., transmission on the UL-SCH on the BWP(s)). Also, ina case that the BWP(s) is activated, the UE 102 may perform transmissionon RACH (i.e., transmission on the RACH on the BWP(s)). Also, in a casethat the BWP(s) is activated, the UE 102 may monitor the PDCCH (i.e.,perform the PDCCH monitoring on the BWP(s). Also, in a case that theBWP(s) is activated, the UE 102 may perform transmission on the PUCCH(i.e., transmission on the PUCCH on the BWP(s)). Also, in a case thatthe BWP(s) is activated, the UE 102 may perform reception on the DL-SCH(i.e., reception on the DL-SCH on the BWP(s)). Also, in a case that theBWP(s) is activated, the UE 102 may start (or restart) the second timerassociated with the BWP(s). Also, in a case that the BWP(s) isdeactivated (i.e., on the inactive BWP(s) for each activated servingcell configured with the BWP(s) (e.g., the BWP operation)), the UE 102may not perform transmission on the UL-SCH (i.e., transmission on theUL-SCH on the BWP(s)). Also, in a case that the BWP(s) is deactivated,the UE 102 may not perform transmission on RACH (i.e., transmission onthe RACH on the BWP(s)). Also, in a case that the BWP(s) is deactivated,the UE 102 may not monitor the PDCCH (i.e., perform the PDCCH monitoringon the BWP(s). Also, in a case that the BWP(s) is deactivated, the UE102 may not perform transmission on the PUCCH (i.e., transmission on thePUCCH on the BWP(s)). Also, in a case that the BWP(s) is deactivated,the UE 102 may not perform reception on the DL-SCH (i.e., reception onthe DL-SCH on the BWP(s)). Also, in a case that the BWP(s) isdeactivated, the UE 102 may clear (or stop) the second timer associatedwith the BWP(s).

Here, in a case that the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) is deactivated, the UE 102 may suspend (e.g., interrupt, store)the setting(s) for the CSI reporting. As described above, the DL BWP(s)(e.g., the single DL BWP) may be associated with the setting(s) for theCSI reporting and/or the CSI reporting. Also, the UL BWP(s) (e.g., thesingle UL BWP linked to the single DL BWP associated with the setting(s)for the CSI reporting and/or the CSI reporting) may be associated withthe setting(s) for the CSI reporting and/or the CSI reporting. Forexample, in a case that the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) is deactivated, the UE 102 may suspend the setting(s) for theCSI reporting associated with the BWP(s) (e.g., the DL BWP(s) and/or theUL BWP(s)). For example, in a case that two DL BWPs are configured(e.g., and/or activated) for the serving cell(s) and each setting forthe CSI reporting is configured for each DL BWP, if the one DL BWP isdeactivated, the setting(s) for the CSI reporting associated with theone deactivated DL BWP may be suspended. Namely, the setting(s) for theCSI reporting associated with another one DL BWP (e.g., anotheractivated DL BWP) may be continuously used (e.g., configured, consideredas to be configured). For example, in a case that second timerassociated with the BWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s))expires, the UE 102 may deactivate the BWP(s) (e.g., the DL BWP(s)and/or the UL BWP(s)) and suspend the setting(s) for the CSI reportingassociated with the BWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)).

Also, in a case that the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) is activated, the UE 102 may (re-)initialize (e.g., (re-)start,resume, proceed with, continue) the setting(s) for the CSI reporting.Namely, in a case that the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)) is activated, the UE 102 may (re-)initialize the setting(s) forthe CSI reporting associated with the BWP(s) (e.g., the DL BWP(s) and/orthe UL BWP(s)). For example, in a case that two DL BWPs are configuredfor the serving cell(s) and one DL BWP (i.e., one DL BWP among the twoDL BWPs) is activated, the setting(s) for the CSI reporting associatedwith the one activated DL BWP may be (re-)initialized. Namely, thesetting(s) for the CSI reporting associated with another one DL BWP(e.g., another deactivated DL BWP) may be continuously suspended (e.g.,considered as to be suspended). For example, in a case that the BWP(s)(e.g., the DL BWP(s) and/or the UL BWP(s)) is activated, the UE 102 maystart the second timer associated with the BWP(s) (e.g., the DL BWP(s)and/or the UL BWP(s)) and (re-)initialize the setting(s) for the CSIreporting associated with the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)). Namely, in a case that the BWP(s) (e.g., the DL BWP(s) and/orthe UL BWP(s)) is activated, the UE 102 may (re-)initialize thesuspended setting(s) associated with the BWP(s) (e.g., the DL BWP(s)and/or the UL BWP(s)). For example, in a case that BWP(s) (e.g., the DLBWP(s) and/or the UL BWP(s)) is activated, the UE 102 may(re-)initialize, based on the stored setting(s) (e.g., based on thestored setting(s) associated with the BWP(s) (e.g., the DL BWP(s) and/orthe UL BWP(s))), the suspended setting(s) associated with BWP(s) (e.g.,the DL BWP(s) and/or the UL BWP(s)). Namely, in a case that the BWP(s)(e.g., the DL BWP(s) and/or the UL BWP(s)) is activated, the UE 102 may(re-)initialize, based on the stored configuration(s) (e.g., based onthe stored configurations(s) associated with the BWP(s) (e.g., the DLBWP(s) and/or the UL BWP(s)), the suspended setting(s) associated withthe BWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)).

Alternatively, in a case that the BWP(s) (e.g., the DL BWP(s) and/or theUL BWP(s)) is deactivated, the UE 102 may clear (e.g., stop) thesetting(s) for the CSI reporting. For example, in a case that the BWP(s)(e.g., the DL BWP(s) and/or the UL BWP(s)) is deactivated, the UE 102may clear the setting(s) for the CSI reporting associated with theBWP(s) (e.g., the DL BWP(s) and/or the UL BWP(s)). For example, in acase that two DL BWPs are configured (e.g., and/or activated) for theserving cell(s) and each setting for the CSI reporting is configured foreach DL BWP, if the one DL BWP is deactivated, the setting(s) for theCSI reporting associated with the one deactivated DL BWP may be cleared.Namely, the setting(s) for the CSI reporting associated with another oneDL BWP (e.g., another activated DL BWP) may be continuously used (e.g.,configured, considered as to be configured). For example, in a case thatsecond timer associated with the BWP(s) (e.g., the DL BWP(s) and/or theUL BWP(s)) expires, the UE 102 may deactivate the BWP(s) (e.g., the DLBWP(s) and/or the UL BWP(s)) and clear the setting(s) for the CSIreporting associated with the BWP(s) (e.g., the DL BWP(s) and/or the ULBWP(s)).

Here, the setting(s) for the CSI reporting may include a setting(s)associated with a reporting setting(s) (e.g., configuration(s) for thereporting setting(s)), as described below. Also, the setting(s) for theCSI reporting may include a setting(s) associated with a resourcesetting(s) (e.g., configuration(s) for the resource setting(s)), asdescribed below. Also, the setting(s) for the CSI reporting may includea setting(s) associated with a measurement setting(s) (e.g.,configuration(s) for the measurement setting(s), configuration(s) foreach link). Also, the setting(s) for the CSI reporting may include asetting(s) associated with a reporting configuration for the CSI (e.g.,the reporting configuration for the CSI). As described above, the UE 102may perform, based on the setting(s) (i.e., described below), the CSIreporting (i.e., described below).

A UE procedure for reporting channel state information (CSI) isdescribed herein. Channel state information framework is described. Thetime and frequency resources that can be used by the UE 102 to reportCSI are controlled by the gNB 160. CSI may include Channel QualityIndicator (CQI), preceding matrix indicator (PMI), CSI-RS resourceindicator (CRI), strongest layer indication (SLI), rank indication (RI)and/or and L1-RSRP. For CQI, PMI, CRI, SLI, RI, L1-RSRP, a UE 102 may beconfigured by higher layers with N≥1 ReportConfig Reporting Settings,M≥1 ResourceConfig Resource Settings, and a single MeasConfigmeasurement setting containing L≥1 Links. A MeasConfig contains a listof reporting configurations (ReportConfigList), a list of resourceconfigurations (ResourceConfigList), a list of link configurations(MeasLinkConfigList) and a list of trigger states (ReportTrigger).

Reporting settings that may be used in a UE procedure for reportingchannel state information (CSI) are also described herein. EachReporting Setting ReportConfig may be associated with a single downlinkBWP (higher layer parameter bandwidthPartId) and may contains thereported parameter(s) for one CSI reporting band: CSI Type (I or II) ifreported, codebook configuration including codebook subset restriction,time-domain behavior, frequency granularity for CQI and PMI, measurementrestriction configurations, the strongest layer indicator (SLI), thereported L1-RSRP parameter(s), CRI, and SSBRI (SSB Resource Indicator).

Each ReportConfig may contain a ReportConfigID to identify theReportConfig, a ReportConfigType to specify the time domain behavior ofthe report (either aperiodic, semi-persistent, or periodic), aReportQuantity to indicate the CSI-related or L1-RSRP-related quantitiesto report, a ReportFreqConfiguration to indicate the reportinggranularity in the frequency domain. For periodic/semi-persistentreporting, a ReportConfig may contain a ReportSlotConfig to specify theperiodicity and slot offset. For aperiodic reporting, a ReportConfigcontains an AperiodicReportSlotOffset to specify a set of allowed valuesof the timing offset for aperiodic reporting (a particular value isindicated in DCI).

The ReportFreqConfiguration may contain parameters to enableconfiguration of at least subband or wideband PMI and CQI reportingseparately. The ReportConfig may also containMeasRestrictionConfig-time-channel to specify parameters to enableconfiguration of time domain measurement restriction for channel. TheReportConfig may also contain MeasRestrictionConfig-time-interference tospecify parameters to enable separate configuration of time domainmeasurement restriction for interference. The ReportConfig may alsocontain CodebookConfig, which contains configuration parameters forType-I or Type II CSI including codebook subset restriction.

Resource settings that may be used in a UE procedure for reportingchannel state information (CSI) are also described herein. Each ResourceSetting ResourceConfig may contain a configuration of S≥1 CSI-RSResource Sets (higher layer parameter ResourceSetConfig), with eachResource Set including CSI-RS resources (higher layer parametersNZP-CSI-RS-ResourceConfigList and CSI-IM-ResourceConfigList) and SS/PBCHBlock resources used for L1-RSRP computation (higher layer parameterresource-config-SS-list). Each Resource setting may be located in theBWP identified by the higher layer parameter BWP-info, and all linkedResource Settings of a CSI Report Setting have the same BWP.

For periodic and semi-persistent CSI Resource Settings, S=1. Each set smay contain K_(S)≥1 CSI-RS resources (higher layer parameterCSI-RS-ResourceConfig) each of which includes at least mapping to REs,number of ports and time-domain behavior. The time domain behavior ofthe CSI-RS resources which are part of sets within a CSI-RS ResourceSetting may be indicated by the higher layer parameterResourceConfigType and can be aperiodic, periodic, or semi-persistent.

The following are configured via higher layer signaling for one or moreCSI resource settings for channel and interference measurement: CSI-IM(Interference Measurement) resource for interference measurement;non-zero power CSI-RS resource for interference measurement; and/ornon-zero power CSI-RS resource for channel measurement.

Measurement link that may be used in a UE procedure for reportingchannel state information (CSI) is also described herein. Each LinkMeasLinkConfig in the higher layer-configured CSI measurement settingmay contain the CSI Reporting Setting indication, CSI Resource SettingIndication, and MeasQuantity an indication of the quantity to bemeasured which can be either channel measurement or interferencemeasurement. ReportConfigMax indicates the maximum number of reportconfigurations, ResourceConfigMax may indicates the maximum number ofresource configurations, MeasLinkConfigMax indicates the maximum numberof link configurations, ResourceSetMax indicates the maximum number ofresources sets per resource configuration, CSI-RS-ResourcePerSetMaxindicates the maximum number of NZP-CSI-RS resources per NZP-CSI-RSresource set, NZP-CSI-RS-ResourceMax indicates the maximum number ofNZP-CSI-RS resources, CSI-IM-ResourcePerSetMax indicates the maximumnumber of CSI-IM resources per CSI-IM resource set, CSI-IM-ResourceMaxindicates the maximum number of CSI-IM resources, andAperiodicReportTrigger contains trigger states for dynamically selectingone or more aperiodic reporting configurations.

Reporting configurations that may be used in a UE procedure forreporting channel state information (CSI) are also described herein. TheReporting configuration for CSI may be aperiodic (using PUSCH), periodic(using PUCCH) or semi-persistent (using PUCCH, and DCI activated PUSCH).The CSI-RS Resources may be periodic, semi-persistent, or aperiodic.Table-1 shows the supported combinations of CSI Reportingconfigurations, CSI Resource configurations and how the CSI Reporting istriggered for each CSI-RS configuration. Periodic CSI-RS may beconfigured by higher layers.

TABLE 1 Aperiodic CSI-RS Periodic CSI Semi-Persistent CSI CSIConfiguration Reporting Reporting Reporting Periodic CSI- No dynamicReporting on PUCCH: the DCI RS triggering/ UE receives a selectionactivation command Reporting on PUSCH: DCI Semi-Persistent Not SupportedReporting on PUCCH: the DCI CSI-RS UE receives a selection commandReporting on PUSCH: DCI Aperiodic CSI- Not Supported Not Supported DCIRS

When the UE 102 is configured with the higher layer configured parameterNumber-CQI set to 1′, a single CQI may be reported for one codeword perCSI report. When ‘2’ is configured, one CQI for each codeword may bereported per CSI report. The Number-CQI may be contained inReportConfig.

When the UE 102 is configured with a CSI-RS resource set and when thehigher layer parameter CSI-RS-ResourceRep is set to ‘OFF’, the UE 102may determine a CRI from the supported set of CRI values and report thenumber in each CRI report. When the higher layer parameterCSI-RS-ResourceRep is set to ‘ON’, CRI is not reported.

For periodic or semi-persistent CSI reporting, the followingperiodicities (measured in slots) may be configured by the higher layerparameter ReportPeriodicity: {5, 10, 20, 40, 80, 160, 320}.

The ReportFreqConfiguration contained in a ReportConfig indicates thefrequency granularity of the CSI Report. For CSI reporting, a UE 102 maybe configured via higher layer signaling with one out of two possiblesubband sizes, where a subband is defined as N_(PRB) ^(SB) contiguousPRBs and depends on the total number of PRBs in the carrier bandwidthpart according to Table-2.

TABLE 2 Carrier bandwidth part (PRBs) Subband Size (PRBs) <24 N/A 24-724, 8  73-144 8, 16 145-275 16, 32 

A CSI reporting setting configuration defines a CSI reporting band as asubset of subbands of the bandwidth part, where theReportFreqConfiguration indicates the following. (1) TheCSI-ReportingBand as a contiguous or non-contiguous subset of subbandsin the bandwidth part for which CSI may be reported. The UE 102 is notexpected to be configured with a CSI reporting band which containssubbands where reference signals for channel and interference are notpresent. (2) Single CQI or multiple CQI reporting, as configured by thehigher layer parameter CQI-FormatIndicator. When single CQI reporting isconfigured, a single CQI is reported for each codeword for the entireCSI reporting band. When multiple CQI reporting is configured, one CQIfor each codeword is reported for each subband in the CSI reportingband. (3) single PMI or multiple PMI reporting as configured by thehigher layer parameter PMI-FormatIndicator. When single PMI reporting isconfigured, a single PMI is reported for the entire CSI reporting band.When multiple PMI reporting is configured, except with 2 antenna ports,a single wideband indication (i₁) is reported for the entire CSIreporting band and one subband indication (i₂) is reported for eachsubband in the CSI reporting band. When multiple PMIs are configuredwith 2 antenna ports, a PMI is reported for each subband in the CSIreporting band.

If a UE 102 is configured with semi-persistent CSI reporting, the UE 102may report CSI when both CSI-IM and non-zero power CSI-RS resources areconfigured as periodic or semi-persistent. If a UE 102 is configuredwith aperiodic CSI reporting, the UE 102 may report CSI when both CSI-IMand non-zero power CSI-RS resources are configured as periodic,semi-persistent or aperiodic.

CSI selection and activation are also described. Regarding aperiodicCSI, For Resource Sets configured with the higher layer parameterResourceConfigType set to ‘aperiodic’, trigger states for ReportingSetting(s) and/or Resource Set(s) for channel and/or interferencemeasurement on one or more component carriers are configured using thehigher layer parameter AperiodicReportTrigger. For aperiodic CSI reporttriggering, a single set of CSI triggering states are higher layerconfigured, wherein the CSI triggering states can be associated witheither candidate DL BWP. A UE 102 is not expected to be triggered with aCSI report for a non-active DL BWP. A trigger state is initiated usingthe DCI CSI request field.

For a UE 102 configured with the higher layer parameterAperiodicReportTrigger, if a resource setting linked to a ReportConfighas multiple aperiodic resource sets and only a subset of the aperiodicresource sets is associated with the trigger state, a higher layerconfigured bitmap ResourceSetBitmap is configured per trigger state perresource setting to select the CSI-IM/NZP CSI-RS resource set(s) fromthe resource setting. When aperiodic CSI-RS is used with aperiodicreporting, the CSI-RS offset is configured per resource set in thehigher layer parameter AperiodicNZP-CSI-RS-TriggeringOffset. The CSI-RStriggering offset X is measured in slots.

Regarding semi-persistent CSI, for semi-persistent reporting on PUSCH, aset of semi-persistent CSI report settings are higher layer configuredby Semi-persistent-on-PUSCHReportTrigger and the CSI request field inDCI scrambled with SP-CSI C-RNTI activates one of the semi-persistentCSI reports.

For semi-persistent reporting on PUCCH, a set of semi-persistent CSIreport settings may be higher layer configured by reportConfigType withthe PUCCH resource used for transmitting the CSI report. Semi-persistentreporting on PUCCH is activated by an activation command, which selectsone of the semi-persistent CSI Report settings for use by the UE 102 onthe PUCCH. If the field reportConfigType is not present, the UE 102 mayreport the CSI on PUSCH.

For a UE 102 configured with the higher layer parameterResourceConfigType set to ‘semi-persistent’, when a UE 102 receives anactivation command for CSI-RS resource(s) for channel measurement andCSI-IM/NZP CSI-RS resource(s) for interference measurement associatedwith configured CSI resource setting(s) in slot n, the correspondingactions in and the UE assumptions (including quasi-co-locationassumptions provided by a reference to a TCI-RS-SetConfig) onCSI-RS/CSI-IM transmission corresponding to the configured CSI-RS/CSI-IMresource configuration(s) may be applied no later than a minimumrequirement. When a UE 102 receives a deactivation command for activatedCSI-RS/CSI-IM resource(s) associated with configured CSI resourcesetting(s) in slot n, the corresponding actions and UE assumption oncessation of CSI-RS/CSI-IM transmission corresponding to the deactivatedCSI-RS/CSI-IM resource(s) shall apply no later than a minimumrequirement.

CSI reporting using PUSCH is also described herein. A UE 102 may performaperiodic CSI reporting using PUSCH in slot n+Y on serving cell c uponsuccessful decoding in slot n of an uplink DCI format for serving cellc, where Y is indicated in the decoded uplink DCI. The higher layerparameter AperiodicReportSlotOffset contains the allowed values of Y fora given Reporting Setting. When N_(Rep)≥1 reports are scheduled, letY_(i, j) be the ith allowed value for Report Setting j (j=0, . . . ,N_(Rep)−1). Then the ith codepoint of the DCI field corresponds to theallowed value

$Y_{i = \max\limits_{j}}{Y_{i,j}.}$

An aperiodic CSI report carried on the PUSCH supports wideband, partialband, and sub-band frequency granularities. An aperiodic CSI reportcarried on the PUSCH supports Type I and Type II CSI.

A UE 102 may perform semi-persistent CSI reporting on the PUSCH uponsuccessful decoding an uplink DCI format. The uplink DCI format willcontain one or more CSI Reporting Setting Indications where theassociated CSI Measurement Links and CSI Resource Settings are higherlayer configured. Semi-persistent CSI reporting on the PUSCH supportsType I and Type II CSI with wideband, partial band, and sub-bandfrequency granularities. The PUSCH resources and MCS shall be allocatedsemi-persistently by an uplink DCI.

CSI reporting on PUSCH can be multiplexed with uplink data on PUSCH. CSIreporting on PUSCH can also be performed without any multiplexing withuplink data from the UE 102.

Type I CSI feedback is supported for CSI Reporting on PUSCH. Type Isubband CSI is supported for CSI Reporting on the PUSCH. Type II CSI issupported for CSI Reporting on the PUSCH.

For Type I CSI feedback on PUSCH, a CSI report comprises up to twoparts. Part 1 contains RI/CRI, CQI for the first codeword. Part 2contains PMI and contains the CQI for the second codeword when RI>4.

For Type II CSI feedback on PUSCH, a CSI report comprises up to twoparts. Part 1 is used to identify the number of information bits in Part2. Part 1 shall be transmitted in its entirety before Part 2 and may beused to identify the number of information bits in Part 2. Part 1 has afixed payload size and contains RI, CQI, and an indication of the numberof non-zero wideband amplitude coefficients per layer for the Type IICSI. The fields of Part 1—RI, CQI, and the indication of the number ofnon-zero wideband amplitude coefficients for each layer—are separatelyencoded. Part 2 contains the PMI of the Type II CSI. Part 1 and 2 areseparately encoded. A Type II CSI report that is carried on the PUSCHshall be computed independently from any Type II CSI report that iscarried on the Long PUCCH.

When the higher layer parameter ReportQuantity is configured with one ofthe values ‘CRI/RSRP’ or ‘SSBRI/RSRP’, the CSI feedback may include asingle part.

When CSI reporting on PUSCH comprises two parts, the UE 102 may omit aportion of the Part 2 CSI. Omission of Part 2 CSI is according to thepriority order shown in Table-3, where N_(Rep) is the number of CSIreports in one slot. Priority 0 is the highest priority and priority2N_(Rep) is the lowest priority and the CSI report numbers correspond tothe order of the associated ReportConfigID. When omitting Part 2 CSIinformation for a particular priority level, the UE 102 may omit all ofthe information at that priority level.

TABLE 3 Priority 0: Part 2 wideband CSI for CSI reports 1 to N_(Rep)Priority 1: Part 2 subband CSI of even subbands for CSI report 1Priority 2: Part 2 subband CSI of odd subbands for CSI report 1 Priority3: Part 2 subband CSI of even subbands for CSI report 2 Priority 4: Part2 subband CSI of odd subbands for CSI report 2 . . . Priority 2N_(Rep) −1: Part 2 subband CSI of even subbands for CSI report N_(Rep) Priority2N_(Rep): Part 2 subband CSI of odd subbands for CSI report N_(Rep)

CSI reporting using PUCCH is also described. A UE 102 may besemi-statically configured by higher layers to perform periodic CSIReporting on the PUCCH. A UE 102 may be configured by higher layers formultiple periodic CSI Reports corresponding to one or more higher layerconfigured CSI Reporting Setting Indications, where the associated CSIMeasurement Links and CSI Resource Settings are higher layer configured.Periodic CSI reporting on the short and the long PUCCH supports widebandand partial band frequency granularities. Periodic CSI reporting on thePUCCH supports Type I CSI.

A UE 102 may perform semi-persistent CSI reporting on the PUCCH uponsuccessfully decoding a selection command. The selection command maycontain one or more CSI Reporting Setting Indications where theassociated CSI Measurement Links and CSI Resource Settings areconfigured. Semi-persistent CSI reporting on the PUCCH supports Type ICSI. Semi-persistent CSI reporting on the Short PUCCH supports Type ICSI with wideband and partial band frequency granularities.Semi-persistent CSI reporting on the Long PUCCH supports Type I SubbandCSI and Type I CSI with wideband and partial band frequencygranularities.

Periodic CSI reporting on the short and long PUCCH supports wideband andpartial band frequency granularities. Periodic CSI reporting on thePUCCH supports Type I CSI. When the short and long PUCCH carry Type ICSI with wideband and partial band frequency granularity, the CSIpayload carried by the short PUCCH and long PUCCH are identical and thesame irrespective of RI/CRI. For type I CSI sub-band reporting on longPUCCH, the payload is split into two parts. The first part containsRI/CRI, CQI for the first codeword. The second part contains PMI andcontains the CQI for the second codeword when RI>4.

A report may be carried on the Long PUCCH supports Type II CSI feedback,but may include only Part 1 of Type II CSI feedback. Supporting Type IICSI reporting on the Long PUCCH is a UE capability. A Type II CSI report(Part 1 only) carried on the Long PUCCH may be calculated independentlyof any Type II CSI reports carried on the PUSCH.

FIG. 14 is a flow diagram illustrating a communication method 1400 of auser equipment 102 that communicates with a base station apparatus 160on one or more downlink bandwidth parts (DL BWPs) in a serving cell. Thecommunication method includes receiving 1402 an activation command forsemi-persistent channel state information-reference signal (CSI-RS) andchannel state information-interference measurement (CSI-IM) resource(s)configuration, the semi-persistent CSI-RS and CSI-IM resource(s)configuration being associated with a DL BWP in the serving cell. Thecommunication method also includes receiving 1404 a deactivation commandfor the semi-persistent CSI-RS and CSI-IM resource(s) configuration. Thecommunication method also includes considering 1406 that thesemi-persistent CSI-RS and CSI-IM resource(s) configuration is suspendedwhen the associated DL BWP is being deactivated.

The communication method 1400 may further include receiving a radioresource control message comprising a parameter used for identifying theassociated DL BWP. The communication method may also further includeperforming CSI reporting based on the semi-persistent CSI-RS and CSI-IMresource(s) configuration. The CSI-RS resource(s) may be for channelmeasurement, and the CSI-IM resource(s) may be for interferencemeasurement.

FIG. 15 is a flow diagram illustrating a communication method 1500 of abase station apparatus 160 that communicates with a user equipment 102on one or more downlink bandwidth parts (DL BWPs) in a serving cell. Thecommunication method includes transmitting 1502 an activation commandfor semi-persistent channel state information-reference signal (CSI-RS)and channel state information-interference measurement (CSI-IM)resource(s) configuration, the semi-persistent CSI-RS and CSI-IMresource(s) configuration being associated with a DL BWP in the servingcell. The communication method also includes transmitting 1504 adeactivation command for the semi-persistent CSI-RS and CSI-IMresource(s) configuration. The communication method also includesconsidering 1506 that the semi-persistent CSI-RS and CSI-IM resource(s)configuration is suspended when the associated DL BWP is beingdeactivated.

The communication method 1500 may further include transmitting a radioresource control message comprising a parameter used for identifying theassociated DL BWP. The communication method 1500 may also furtherinclude receiving CSI reporting based on the semi-persistent CSI-RS andCSI-IM resource(s) configuration. The CSI-RS resource(s) may be forchannel measurement, and the CSI-IM resource(s) may be for interferencemeasurement.

As described above, some methods for the DL and/or UL transmissions(e.g., the PDSCH transmission and/or the PUSCH transmission) may beapplied (e.g., specified). Here, the combination of one or more of themethods described above may be applied for the DL and/or UL transmission(e.g., the PDSCH transmission and/or the PUSCH transmission). Thecombination of the one or more of the methods described above may not beprecluded in the described systems and methods.

It should be noted that names of physical channels described herein areexamples. The other names such as “NRPDCCH, NRPDSCH, NRPUCCH andNRPUSCH,” “new Generation-(G)PDCCH, GPDSCH, GPUCCH and GPUSCH” or thelike can be used.

The term “computer-readable medium” refers to any available medium thatcan be accessed by a computer or a processor. The term“computer-readable medium,” as used herein, may denote a computer-and/or processor-readable medium that is non-transitory and tangible. Byway of example and not limitation, a computer-readable orprocessor-readable medium may comprise RAM, ROM, EEPROM, CD-ROM or otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium that can be used to carry or store desiredprogram code in the form of instructions or data structures and that canbe accessed by a computer or processor. Disk and disc, as used herein,includes compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray® disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.

It should be noted that one or more of the methods described herein maybe implemented in and/or performed using hardware. For example, one ormore of the methods described herein may be implemented in and/orrealized using a chipset, an application-specific integrated circuit(ASIC), a large-scale integrated circuit (LSI) or integrated circuit,etc.

Each of the methods disclosed herein comprises one or more steps oractions for achieving the described method. The method steps and/oractions may be interchanged with one another and/or combined into asingle step without departing from the scope of the claims. In otherwords, unless a specific order of steps or actions is required forproper operation of the method that is being described, the order and/oruse of specific steps and/or actions may be modified without departingfrom the scope of the claims.

It is to be understood that the claims are not limited to the preciseconfiguration and components illustrated above. Various modifications,changes and variations may be made in the arrangement, operation anddetails of the systems, methods and apparatus described herein withoutdeparting from the scope of the claims.

A program running on the gNB 160 or the UE 102 according to thedescribed systems and methods is a program (a program for causing acomputer to operate) that controls a CPU and the like in such a manneras to realize the function according to the described systems andmethods. Then, the information that is handled in these apparatuses istemporarily stored in a RAM while being processed. Thereafter, theinformation is stored in various ROMs or HDDs, and whenever necessary,is read by the CPU to be modified or written. As a recording medium onwhich the program is stored, among a semiconductor (for example, a ROM,a nonvolatile memory card, and the like), an optical storage medium (forexample, a DVD, a MO, a MD, a CD, a BD and the like), a magnetic storagemedium (for example, a magnetic tape, a flexible disk and the like) andthe like, any one may be possible. Furthermore, in some cases, thefunction according to the described systems and methods described aboveis realized by running the loaded program, and in addition, the functionaccording to the described systems and methods is realized inconjunction with an operating system or other application programs,based on an instruction from the program.

Furthermore, in a case where the programs are available on the market,the program stored on a portable recording medium can be distributed orthe program can be transmitted to a server computer that connectsthrough a network such as the Internet. In this case, a storage devicein the server computer also is included. Furthermore, some or all of thegNB 160 and the UE 102 according to the systems and methods describedabove may be realized as an LSI that is a typical integrated circuit.Each functional block of the gNB 160 and the UE 102 may be individuallybuilt into a chip, and some or all functional blocks may be integratedinto a chip. Furthermore, a technique of the integrated circuit is notlimited to the LSI, and an integrated circuit for the functional blockmay be realized with a dedicated circuit or a general-purpose processor.Furthermore, if with advances in a semiconductor technology, atechnology of an integrated circuit that substitutes for the LSIappears, it is also possible to use an integrated circuit to which thetechnology applies.

Moreover, each functional block or various features of the base stationdevice and the terminal device used in each of the aforementionedembodiments may be implemented or executed by a circuitry, which istypically an integrated circuit or a plurality of integrated circuits.The circuitry designed to execute the functions described in the presentspecification may comprise a general-purpose processor, a digital signalprocessor (DSP), an application specific or general applicationintegrated circuit (ASIC), a field programmable gate array (FPGA), orother programmable logic devices, discrete gates or transistor logic, ora discrete hardware component, or a combination thereof. Thegeneral-purpose processor may be a microprocessor, or alternatively, theprocessor may be a conventional processor, a controller, amicrocontroller, or a state machine. The general-purpose processor oreach circuit described above may be configured by a digital circuit ormay be configured by an analogue circuit. Further, when a technology ofmaking into an integrated circuit superseding integrated circuits at thepresent time appears due to advancement of a semiconductor technology,the integrated circuit by this technology is also able to be used.

What is claimed is:
 1. A user equipment that communicates with a basestation apparatus on one or more downlink bandwidth parts (DL BWPs) inat least one serving cell, comprising: receiving circuitry configured toreceive an activation command for at least one of a semi-persistentchannel state information-reference signal (CSI-RS) and a channel stateinformation-interference measurement (CSI-IM) resource configuration,the semi-persistent CSI-RS and CSI-IM resource configuration beingassociated with a DL BWP of the on one or more DL BWPs, the receivingcircuitry configured to receive a deactivation command for the at leastone of semi-persistent CSI-RS and CSI-IM resource configuration, andprocessing circuitry configured to consider that the at least one of thesemi-persistent CSI-RS and CSI-IM resource configuration is suspended ina case that the associated DL BWP is deactivated.
 2. The user equipmentaccording to claim 1, wherein the receiving circuitry is configured toreceive a radio resource control message comprising a parameter used foridentifying the associated DL BWP.
 3. The user equipment according toclaim 1, further comprising: transmitting circuitry configured toperform CSI reporting based on the at least one of the semi-persistentCSI-RS and CSI-IM resource configuration, wherein CSI-RS resource is forchannel measurement, and CSI-IM resource is for interferencemeasurement.
 4. A base station apparatus that communicates with a userequipment on one or more downlink bandwidth parts (DL BWPs) in at leastone serving cell, comprising, comprising: transmitting circuitryconfigured to transmit an activation command for at least one of asemi-persistent channel state information-reference signal (CSI-RS) anda channel state information-interference measurement (CSI-IM) resourceconfiguration, the semi-persistent CSI-RS and CSI-IM resourceconfiguration being associated with a DL BWP of the on one or more DLBWPs, the transmitting circuitry configured to transmit a deactivationcommand for the at least one of the semi-persistent CSI-RS and CSI-IMresource configuration, and processing circuitry configured to considerthat the at least one of the semi-persistent CSI-RS and CSI-IM resourceconfiguration is suspended in a case that the associated DL BWP isdeactivated.
 5. The base station apparatus according to claim 4, whereinthe transmitting circuitry is configured to transmit a radio resourcecontrol message comprising a parameter used for identifying theassociated DL BWP.
 6. The base station apparatus according to claim 4,further comprising: receiving circuitry configured to receive CSIreporting based on the at least one of the semi-persistent CSI-RS andCSI-IM resource configuration, wherein CSI-RS resource is for channelmeasurement, and CSI-IM resource is for interference measurement.
 7. Acommunication method of a user equipment that communicates with a basestation apparatus on one or more downlink bandwidth parts (DL BWPs) inat least one serving cell, comprising: receiving an activation commandfor at least one of a semi-persistent channel stateinformation-reference signal (CSI-RS) and a channel stateinformation-interference measurement (CSI-IM) resource configuration,the semi-persistent CSI-RS and CSI-IM resource configuration beingassociated with a DL BWP of the on one or more DL BWPs, receiving adeactivation command for the at least one of the semi-persistent CSI-RSand CSI-IM resource configuration, and considering that the at least oneof the semi-persistent CSI-RS and CSI-IM resource configuration issuspended in a case that the associated DL BWP is deactivated.
 8. Thecommunication method according to claim 7, further comprising: receivinga radio resource control message comprising a parameter used foridentifying the associated DL BWP.
 9. The communication method accordingto claim 7, further comprising: performing CSI reporting based on the atleast one of the semi-persistent CSI-RS and CSI-IM resourceconfiguration, wherein CSI-RS resource is for channel measurement, andCSI-IM resource is for interference measurement.
 10. A communicationmethod of a base station apparatus that communicates with a userequipment on one or more downlink bandwidth parts (DL BWPs) in at leastone serving cell, comprising, comprising: transmitting an activationcommand for at least one of a semi-persistent channel stateinformation-reference signal (CSI-RS) and a channel stateinformation-interference measurement (CSI-IM) resource configuration,the semi-persistent CSI-RS and CSI-IM resource configuration beingassociated with a DL BWP of the on one or more DL BWPs, transmitting adeactivation command for the at least one of the semi-persistent CSI-RSand CSI-IM resource configuration, and considering that the at least oneof the semi-persistent CSI-RS and CSI-IM resource configuration issuspended in a case that the associated DL BWP is deactivated.
 11. Thecommunication method according to claim 10, further comprising:transmitting a radio resource control message comprising a parameterused for identifying the associated DL BWP.
 12. communication methodaccording to claim 10, further comprising: receiving CSI reporting basedon the at least one of the semi-persistent CSI-RS and CSI-IM resourceconfiguration, wherein CSI-RS resource is for channel measurement, andCSI-IM resource is for interference measurement.